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]: . four bikers at the start of the line <sep> (A) get no a jump. (B) are wearing different colors of uniforms and helmets, they are about to get start the race. (C) leave and race towards a parking lot on the right. (D) go on the parallel bars but they can't take off their bikes.
[EX A]: B

[EX Q]: A man wearing grey shorts kneels down on a carpeted floor and begins stretching. The man moves his right leg under his hip and in front of his left knee. the man <sep> (A) continues exercising his left leg. (B) is then sitting while he's exercising and putting a harness. (C) then begins looking comfortable about doing this and stretches. (D) begins to rock back and forth in a slow movement as he stretches.
[EX A]: D

[EX Q]: [header] How to clean a felt hat [title] Brush it with a hat brush. [step] Use a hat brush to remove dust and dirt from the surface of your hat. Gently brush the hat counterclockwise, starting at the front and working your way all around. <sep> (A) Be sure to brush in the same direction consistently. [substeps] Purchase a hat brush in a hat store, or online. (B) Get the entire fabric, including the brim, out of the way before you get on to cleaning it again. [substeps] Many felt hats feel wody as you brush. (C) Be careful not to brush too hard as you don't want to damage the hat's lining. Allow the hat to dry completely before moving on. (D) The goal is to softly sweep away debris from the surface. [title] Spray your hat with a spray head washer.
[EX A]:
A