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". 

Example Input: We see a man teaching others to sharpen a knife in a butcher shop. The man wets the sharpening stone. Two men in the back laugh at something. the instructor <sep> (A) shows us a basket of pennies. (B) checks the knives and uses the sharpened knife to sharpen a one. (C) uses a sharpening rod for the knife. (D) puts a paper in the sink.
Example Output: C

Example Input: We see a person sharpen a knife on a sanding disc. The person touches it and turns it off. The person turns it on and then off off. we <sep> (A) see the person sharpening the knife on a cookie sheet. (B) see a man run in slow motion. (C) then see the title screen. (D) see the man talking to the camera.
Example Output: D

Example Input: [header] How to change your mercruiser gear lube [title] Determine what model drive you have. [title] Read your owners manual. [title] Buy the correct amount and type of lube plus a little more. <sep> (A) [title] Buy a little hand pump that fits the bottle of lube to fill the drive. [title] Place a clean oil drain pan under the drive to catch the old lube as it drains out of the bottom of the drive. (B) [title] Check the width of your caliper or bell extender with an x sander. [step] Make sure it's free of cracks, dents, and tears. (C) [title] Hit the gas pedal (in the left hand corner) until the tank is full. [title] Adjust the brake level until the tank is 3 or 4 inches (7.6 to 10.2 cm) off the ground and is steadily moving forward. (D) [step] This is the squirt option and you have much better chances of getting the correct setting. [title] Fill the pump up about 3/4 full of fluid [title] Stand on the outer rivets and check the trim.
Example Output:
A