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]: A girl presses a full lemon on a machine into a cup. The workers add sugar and water before shaking the cup. a straw <sep> (A) skims over a woman's shoulder. (B) is tilted into the cup and the girl dips a sip into the cup. (C) is added and the lemonade is placed on the counter. (D) is held across the machine.
[EX A]: C

[EX Q]: A video of clipping a cats toenails is shown. Each paw is grabbed and the nail is pushed out and trimmed. the cat <sep> (A) paws are re-clipped making a clean appearance. (B) scrapes the nail clean before clipping it. (C) loss hurt but she's gotten over it and is now kicking back showing off her toe nails. (D) is oddly calm the whole time.
[EX A]: D

[EX Q]: [header] How to clean burnt copper [title] Bring water and cleaning agent to a boil. [step] Fill a pot or pan with water. Add a few squirts of mild dish detergent and/or a generous splash of vinegar. <sep> (A) Bring this mixture to a boil over medium heat. [substeps] If you have a store-bought solvent for your copper, such as hydrogen peroxide, you don't need to add it to the water. (B) If you're cleaning anything other than a copper pot or pan (or cleaning the outside of a smaller pot or pan), place the item in the water. Set the burner to medium heat and bring to a boil. (C) The water shouldn't be too cold, though. Warm or cold water doesn't work very well on copper. (D) Turn your burner to high and bring the water to a boil over high heat. You'll need to keep the water at a simmer for about 30 minutes.
[EX A]:
B