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 Input:
[header] How to defrost bread [title] Thaw out as many slices as you'll need. [step] If you're only going to use a portion of your sliced bread, it's best to defrost that portion only. Thawing out an entire loaf of sliced bread when you only need a few slices will require you to either consume the rest of the loaf or refreeze it. <sep> (A) [substeps] Refreezing bread repeatedly can dry the bread out, making it hard and/or stale. Set aside as many slices as you'll need to defrost and save the rest in the freezer. (B) It shouldn't take more than 1 hour. [title] Squeeze from a plastic bag if you don't have a plastic bag. (C) [substeps] This method works best with a large amount of bread. Defrosted loaves may tear, which can cause it to cook unevenly. (D) [substeps] Thawing out or leaving the bread cold won't help defrost the bread. It only makes it smell bad when it's ready.

Ex Output:
A


Ex Input:
[header] How to remove paint from your shirt [title] Wear gloves and painting clothes. [step] You don't want to stain any more clothing or get your hands dirty. So wear gloves and clothing that you wouldn't mind getting paint on. <sep> (A) Gloves are important for much of the time, because they protect your hands and may help your paint flake off. [substeps] Try to wear disposable gloves when painting your shirt. (B) [title] Remove excess paint as soon as possible. [step] You can use a kitchen utensil like a knife or spoon or a scraper such as a popsicle stick. (C) [substeps] You could also wear safety goggles or goggles with loofahs. [title] Wash your clothes in soapy water before you start painting. (D) [title] Sort it into separate clothing sections so there will be clean space for you to work on. [title] Paint the area where the stain was caused.

Ex Output:
B


Ex Input:
A person is using a mop to mop the floor. A small dog is chasing the mop. they <sep> (A) continue to mop with the dog on the mop. (B) are mopping the back of a writing desk, wall and the floor. (C) jab the mop into a bucket. (D) dance around on the screen.

Ex Output:

A