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".

Input: Consider Input: A bunch of men are inside a green colored gym. They are lobbing a tennis ball back and forth. they <sep> (A) are engaged in a game of tennis. (B) bounce the ball up and down on the trampoline as they go. (C) hit the ball up high into the air. (D) knock balls off the hoops into the spectators.

Output: A

Input: Consider Input: A man shows a video of himself training for the weightlifting events in the olympics. several times <sep> (A) he practices weightlifting while someone films him and clips him outside. (B) he is shown doing lift lifts and then off of the bar. (C) , times when they are in the olympics, coaches speak with them while the camera pans around the competition. (D) , he picks up weight and lifts it over his head.

Output: D

Input: Consider Input: [header] How to prepare bok choy [title] Buy bright, firm bok choy for eating raw. [step] Bok choy is perfectly fine and tender for eating raw, especially with the right pairings in a salad. If you're going to eat raw bok choy, buy them small and brightly colored. <sep> (A) Bite into the flesh to get its sweetness and firmness. [substeps] Bok choy can be raw, fresh, or diced. (B) [substeps] Leftover bok choy should only be eaten plain or fresh. [title] Store bok choy for following foods. (C) You'll also be breathing in the fumes of this meat so be sure to leave room for fresh or tender bok choy. [title] Find fresh and unbruised bok choy slices for topping. (D) Young bok choy is tender and delicious. [substeps] Most bok choy is fairly limp, compared to heftier lettuces and other greens, so that's not necessarily a sign of quality.
Output: D