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". 

[EX Q]: [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.
[EX A]: D

[EX Q]: [header] How to make a home safe for toddlers [title] Use cabinet and drawer child latches to keep little hands out of poison and sharp items. [step] Keep heavy items locked away or well out of their reach. If oven doors are not lockable, buy a latch to keep them shut unless you want to watch your child at all times when baking. <sep> (A) [title] Use childproof latches for household repairs. [step] They can be safely locked, or were given, because they' stay safe' at the end of a hallway or adjoining small room. (B) [title] If you can, leave some items accessible to toddlers that are safe. [step] They can bang on pans or sort your plastic storage containers while you cook or clean. (C) [title] Refrain from leaving your baby inside for long periods of time. [step] Children with small hands and easily handled hands can become allergic and can even choke on poisonous foods and vegetables. (D) Lids are very fragile and we should avoid turning them on or checking the lock. [title] Use holes big enough to allow ventilation, light from the oven, and a childproof bulb for the door.
[EX A]: B

[EX Q]: [header] How to use the world clock on timeanddate [title] Learn about the world clocks. [step] Click on " about the world clock, " which will give you some good-to-know information, including the types of world clocks and when the world clocks were moved to timeanddate.com. [title] Click on " world clock. <sep> (A) [step] " it should be at the top, where the other buttons are. This will allow you to see what time it is all over the world. (B) " [title] Find a blank room in timeanddousous.com. [step] Hit the " gwhoever is already logged in? " button to proceed. (C) " [step] You will be given the start frame of your world clock. [title] Press the speech bubble button on your controller to change the time frame. (D) [step] " after selecting the world clock from the drop-down list, you will be brought to a screen entitled " world clocks. " under the " world clocks " heading, clicking on it will allow you to begin the world clock game.
[EX A]:
A