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: If you want to see climate change, head north and keep going until you run out of globe. That is easier said than done. The Arctic is home to few people and covered in ice much of the year. But those who make their way to the icy seas of the Arctic Ocean will see a part of the planet that is warming and changing faster than anywhere else. In September, scientists announced at the National Snow and Ice Data Center that Arctic summer sea ice had fallen to its second lowest level since 1979, and probably long before that. The Arctic has lost an area of ice greater than the area of all U.S. states east of the Mississippi River. And what ice remains appears to be getting thinner and weaker. Nick Toberg and Till Wagner are polar ice scientists who are doing sea ice fieldwork. "There is plenty of data to suggest that the ice is becoming thinner as well as smaller in area," they say. The changes happening in the Arctic are a warning for the entire world . As polar expert Walt Meier puts it, " _ Some scientists worry that Arctic sea ice may be going from a downward spiral to a "death spiral", one from which there is no escape. As more ice melts , more dark open water appears. The darkness absorbs more heat, which speeds up the pace of melting. Until recently, many scientists thought it might take until the end of the century for the North Pole to become completely ice free during the summer. Now some believe it could happen by 2030 or even earlier. "The melting is happening faster in the real world than it has in the models," says Nick Toberg.
Question: Nick Toberg may agree that _ .
Options: (A) the ice in the North Pole will stop melting (B) the ice in the North Pole is melting faster than expected (C) the ice in the North Pole will melt before 2030 or even earlier (D) the ice in the North Pole will not disappear until the end of the century

Output: B

Input: Consider Input: Article: When I was a kid, I was just like every other kid. As usual, I liked being with friends and having fun. But I didn't like school much. I didn't like the rule of learning, studying, memorizing, etc. Too much work. As I got into high school, things changed for me. I started reading a lot of books. Books taught me about life and helped me learn about the world. I read around 30 books during each senior year. I learned to love reading then. Little did I know at that time that I would write books by myself. I've written 7 books since then. One book I wrote, Powerful Attitudes, was a huge success within a network marketing company in the USA. When I was 17 years old, I took about a dozen guitar lessons. I fell in love with guitar music no matter if it is blues, rock, flamenco or classical. I've attended concerts and have heard some great guitarists through the years. Recently, I bought myself a piano and began to learn to play it. I've made great progress. My knowledge of music and playing guitar has helped me a lot in learning the piano. Last week, I employed a Chinese teacher to teach me Chinese. I've learned about 200 words in my first week. I'm inspired and motivated to learn. In fact, I feel a bit _ , thinking of learning Chinese. It's like a mountain I want to climb and conquer. I'm 56 years old and my love to learn it runs deep in my heart, mind and soul. What I certainly learned while growing up is to love learning. I never want to stop learning. I never want to stop studying people, life, processes and new things. I think the openness of admitting what you don't know, makes you a good learner. You never lie to yourself or to others about your knowledge and experience. I have the attitude that if I don't know something, I will learn to know it.
Question: What can we learn about the author from the passage?
Options: (A) He fell in love with reading when he was a child. (B) One of his books enjoyed a lot of success. (C) He began to love music recently. (D) He is good at Chinese.

Output: B

Input: Consider Input: Article: You're on the third lap around the car park, there are no open spaces, and you're already 15 minutes late for your appointment. Right now you're wishing you could jump out of the car and let it go to find its own spot. Now there's an app for that. Virtual Valet lets your smartphone tell your car to park without you in it. "You pull up to the roadside, push a button on your smartphone and the car takes care of everything else," says Aeron Steinfeld, the lead researcher for the project at Carnegie Mellon University in Pittsburgh, Pennsylvania. To find its own spot, the system uses a sensor suite similar to ones found in many luxury cars. This includes a motion sensor that scans for moving cars and pedestrians, and a forward-facing laser rangefinder normally found in adaptive cruise control to determine the distance of objects in front of the car. Information from these sensors is then fed to an onboard computer to plot the vehicle's course. The users can watch the whole process from their phone. Better still, it will be affordable. The team has spent the last year moving from high-end imaging and processing equipment to less expensive components. In experiments, the vehicle was able to navigate through a crowded parking structure, find an empty spot, and park all on its own. And the greatest appeal of the Virtual Valet Parking App is that it requires no change to existing parking facilities or infrastructure. For the moment, the only car equipped for control by Virtual Valet is Carnegie Mellon' modified Jeep Wrangler, which the researchers have named NavLab11. But Steinfeld hopes that major car manufacturers will adopt the technology. It might be more than technology that holds up the show, however. Self-driving cars have been licensed in only three US states -- California, Nevada and Florida -- and it's unclear how this app would agree with self-driving laws. Until these questions are settled, your insurance provider might be unwilling to cover a ding from a parking incident.
Question: We can infer from the text that _ .
Options: (A) no car manufacturers show interest in the technology (B) the technology is now widely used in the US (C) there will be some difficulty in promoting the technology (D) the technology conflicts with self-driving laws in the US
Output: C