In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Input: Consider Input: Article: We have information about over 300 volunteering opportunities with more than 250 local organizations (charities, statutory organizations such as hospitals and social services and community groups). We are a registered charity and our service is free of charge. We do not run volunteering projects ourselves bur recruit volunteers for a whole range of organizations across Cambridge and South Cambs. Volunteering Links National Council for voluntary Organizations A center to champion and strengthen the voluntary sector in the UK with advice, support and public policy. Cambridge Council for voluntary Service An independent registered charity to help community and voluntary groups in Cambridge, South Cambridgeshire and Fenland. Volunteering Wales Voluntering and volunteer Centers in Wales. Volunteer Development Scotland Volunteering and Volunteer Centres in Scotland. Community Service Volunteers Volunteer placements in the UK. Student Hubs A branch of Student Hubs, a youth-led charity working across the UK to transform student involvement in charitable activities. Timebank A national campaign inspiring and connecting people to share and give time. Registration Information If you spot an opportunity that you like, you can go through a simple online registration process and then we will send you the details. Alternatively you can down load a VOLUNTEER REGISTRATION FORM (please save it to your own computer before editing) and email the completed form to us at info@carn-volunteer.org.uk. If you need a bit more help, then we can offer you a confidential one-to-one chat with a member of staff to discuss what you would like to do. But you must make an appointment beforehand. You don't have to visit the Volunteer Centre in person to get help. We can also provide information by e-mail, post or over the telephone.
Question: Which of the following is not true about the center?
Options: (A) Volunteers can find plenty of opportunities in the center. (B) The center does not charge money for their service. (C) The center does not run volunteering projects themselves. (D) Organizations like Student Hubs belong to the center.

Output: D

Input: Consider Input: Article: Students often want to practice their English outside class. One of the best ways to practice your English is to speak to a foreigner. You may ask, "Is it okay to try to talk to foreigners I see in the street?" The answer is yes and no, but probably no! If you see a foreigner who looks lost, it is polite to ask him, "May I help you?" But, otherwise, you should probably let them get on with their business. Situations, however, do exist where it is quite all right to talk to foreigners. If a foreigner enters your school, classroom, office, shop or restaurant, for instance, feel free to ask him (for example): -- What is your name? -- Where do you come from? -- What do you think of Beijing? -- How long will you stay in Beijing? There are also situations where it's okay to talk to foreigners in public places. If you see a foreigner alone in a restaurant, bar or coffee shop, it may be appropriate to ask him or her: -- Is this seat free? -- Do you mind if I talk to you in English? You can probably help them if they are new in China and if they are alone, you may be able to make them feel more welcome. After a few such questions, you should know whether this person wants to talk to you or not. If they ask you similar questions, or if they give long, informative answers, you're in luck. If not, then give them their privacy. Talking to strangers is fun if you choose the right time and place.
Question: It is the best way to practice your spoken English with _ .
Options: (A) Japanese (B) Americans (C) our classmates (D) French people

Output: B

Input: Consider Input: Article: Imagine a house that keeps itself warm in the wintertime. Think of the savings in terms of fuel bills and unfriendly emissions. Such houses in fact exist, called "passive houses". The concept of these highly energy-efficient buildings took root in the 1990s, before slowly consolidating as a niche construction concept in the 2000s. Are passive houses now actively moving into the mainstream as sustainable buildings? For Brian McGarry, an economics lecturer who built a family house based on passive housing criteria in the Pyrenees this year, the arguments look convincing. As his first full winter in the low energy house draws in, we asked him to keep us informed. Do passive houses work? I had never heard of a passive house in February 2012, when I purchased a plot of land. Nor did I expect that I would be persuaded to build a pre-constructed, custom-designed house based on energy-efficient passive house criteria. It promised to be easier and quicker to build, cheaper to run, and more comfortable to live in. The objective was to incorporate the fundamental concepts of passive energy management into my project: an airtight and highly insulated building envelope; large southfacing double or triple-glazed windows (if possible, filled with argon gas) that passively capture the energy of the sun; a heat recovery ventilation system to provide fresh air; and a simple, low-cost heating system consisting of a modern wood-burning stove, a bathroom heater and a portable radiator backup for when the sun doesn't shine and temperatures decline. No significant limitations were placed on the design, and it had excellent environmental credentials. Moreover, the cost was no more than a conventional build. After six months in use, the house is proving to be both cheap to run and remarkably comfortable-staying cool in the hot summer was effortless, as long as the windows were shuttered or shaded from the sun. Nowstaying warm in the cold, high-altitude December climate also seems easy, so far. Winter arrived in force in the Pyrenees in November, with abundant snowfalls and temperatures as low as minus 8deg Celsius. Though early days, the house has responded well: the stove is lit during cold evenings but the portable radiator has not yet been needed. This type of construction seems not only to make economic and environmental sense, but to enhance our quality of life, too.
Question: Regarding the passive energy management, the houses have characteristics EXCEPT _
Options: (A) using south-facing windows to take in solar energy (B) Providing energy for taking a shower when it's rainy (C) supplying fresh air with a special heat recovery system (D) placing more demands and restrictions on the design
Output: D