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:
A young boy is standing in front of a mound of sand and hitting the mound with his hands. The boy begins to stomp on the sand mound. the boy <sep> (A) continues to kick the puck back and forth while others are watching his game. (B) begins to try to climb the sand mound while people walk on the ocean front at the beach. (C) then sets down the stick and begins to clap his arms. (D) continues kicking the mound of sand until it sticks out.

Ex Output:
B


Ex Input:
[header] How to stretch to improve your flexibility [title] Warm up your muscles. [step] Perform 40 jumping jacks , 25 squats, run on the spot for 5 minutes, and ten press-ups or ten girl press-ups if you are not strong enough. [title] Start with simple stretches to get used to the concept and feeling of stretching. <sep> (A) [step] You can stretch on a ball or in the sky. Avoid attempting to do anything difficult or hard and figure out what you're doing properly. (B) [step] Does it feel to stretch? That is great. Start slow and do thirty chest presses before you reach bench pressing. (C) [step] Stretching is the single best way to exercise comfortably and to elevate your blood circulation. [title] Work your muscles with the backbend workouts. (D) [step] Stand up and stretch your legs into a wide straddle. Reach down until your palms rest on the ground, keeping your legs straight.

Ex Output:
D


Ex Input:
[header] How to clean a stain out of clothes without washing it [title] Know how to spot non-washable fabrics. [step] Most garments will come with a tag that gives you basic washing instructions. If the tag says " dry-clean " on it, then the garment is not washable. <sep> (A) Luckily, most stains will disappear within a few days. If your item of clothing is plain, white, or black, make sure to only buy a tiny stain or stain to prevent washing too often. (B) If this is the case, look for a large, solid tag that will tell you what to wear to the wash. You do not need to have it formal business wear. (C) An item that has black or darker threads is usually water washable. If you're not sure what kind of garment to use, lay it out on a dry surface where it will dry easily. (D) Unfortunately, not all garments come with tags, especially if they are vintage or second-hand. The following types of fabrics tend to be non-washable : [substeps] Acetate modacrylic rayon silk wool [title] Use cornstarch or talcum powder to soak up oil stains.

Ex Output:

D