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:
. 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 Output:
B

Ex Input:
[header] How to keep spiders out of your gardening boots [title] Wash an unwanted pair of pantyhose. [title] Cut the legs off and discard the waist portion. [title] Roll a leg over the open portion of the boot, pulling down to the toe area. <sep> (A) [step] If your leg is not entirely off, fold the front under so you may have one leg intact, exposing only a toe area and one upper portion. Trace a few lines on the bottom piece of the boot using a pencil. (B) [step] Leave about two inches of leg open. This will allow bugs or vines to climb up. (C) [step] The toe area will sit across the open portion of the boot. The pantyhose acts as a barrier against any creepy crawlies finding their way inside. (D) [title] Cut off the side of a skinny sock. [title] Pull some adhesive glue, such as elmer's glue or duct tape, onto a small space in the sock, about to an inch wide.

Ex Output:
C

Ex Input:
[header] How to test a fan clutch [title] Pay attention to changes in air temperature. [step] One of the most common symptoms of a fan clutch on the outs is an inability to properly cool the air circulating through the vehicle. Switch on the a/c and turn it down to the coldest setting. <sep> (A) Too much heat may crease the wires of the clutch. [substeps] Other common behavioral changes that may happen while the clutch is off include heat exhaustion, odor, mechanical problems or even a hardening of the interior of the clutch mechanisms. (B) [substeps] You may notice that air feels condensing around the drive shaft or cold settling in between the clutch shaft and the stick. Bring the vents down and let the air circulate in comfortably by turning the air pressure down to a milder setting. (C) If it fails to cool down after several minutes, or seems to be emitting unusually warm air, there could be a problem. [substeps] Hold your hand a few inches away from the vent so slight variations in temperature will be more noticeable. (D) This process can be performed while you're idling or at the gas station or pumping gas from your steering wheel. If the temperature is above 65 f (21 c), your clutch may not be adequately cooled.

Ex Output:
C