instruction:
In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
question:
[header] How to address guests on escort cards [title] Address individual guests using their full name. [step] Guests who are planning on showing up by themselves need only be identified by their first and last name. Consider including the person's middle initial if they have a common name that may be shared with other guests. <sep> (A) [substeps] Consider the sender of each card or the recipient's first and last name. If they have a primary or joint name, include this with the full name. (B) [substeps] It's a good idea to use the name of the guest you want to address yourself. For example, if you want a library card (and you have permission to use the card), you can designate it " mr. (C) [substeps] For example, someone who lives alone may want to include " treasurer jones, " especially if their name is john smith. [title] Use text messages to identify guests based on their name. (D) [substeps] Unless your wedding is going to be an informal celebration, don't use abbreviations or nicknames-write " samantha " instead of " sam " and " william " rather than " bill. " an escort card for an unaccompanied guest might simply read: " john b.
answer:
D


question:
[header] How to know if you have glaucoma [title] Schedule regular eye exams. [step] Open-angle glaucoma leads to the gradual deterioration of your vision over an extended period of time, usually years. Most people suffering from open-angle fail to notice symptoms until the glaucoma is very advanced and nerve damage has occurred. <sep> (A) [substeps] Glaucoma is usually attributed to a condition called retinopausal glaucoma. Doctors often refer patients with retinopausal glaucoma to psychotherapy or therapy. (B) The overall diagnosis is: glaucoma can present in two patterns: primary and secondary. Secondary glaucoma reverses almost any natural condition and the simplest way to identify glaucoma is to get three to four eye exams in a normal week. (C) [substeps] It is important to schedule eye exams every year, especially if you are over the age of 40 or have a family history or glaucoma. Open-angle is the most common type of glaucoma in the united states, affecting over 2 million people. (D) Checking your eye closely is often the first step to identifying the signs of open-angle glaucoma. [substeps] Schedule a yearly eye exam using a variety of tools.
answer:
C


question:
[header] How to check the imei number of an iphone [title] Open your iphone's settings. [step] From the springboard screen of your iphone, tap the app with a gear icon labeled " settings " to view your iphone's customizable options. [title] View your device's information. <sep> (A) [step] Tap the settings icon listed in the sources section of the settings page. Depending on your device, a list of your current contacts will be displayed along with the device name, model, or phone number, along with apple id and other info. (B) [step] There are four options on the springboard : [substeps] Cellular cellular-you'll need to enter the phone number to search. You can find this information by tapping the " cellular " option. (C) [step] Tap the " public " tab, which will bring you to a list of all your main devices and their imei numbers. Tap the " imei numeric " button on the left to view your device's imei number. (D) [step] Scroll down the settings and tap the " general " options. [title] Select " about " from the general settings list, and you should see all the information about your iphone such as its software version, serial number, and more.
answer:

D