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]: [header] How to clean rubber boots [title] Wipe away light dirt and grime. [step] If your boots aren't especially dirty, you can usually clean them easily with a damp cloth. To prevent dirtiness from building up on your boots and causing longer cleaning times, do this after each time you use your boots. <sep> (A) Before handling an object or stepping on something wet, make sure you wipe it away on a rag first. Use a mild soap and water to wipe off even the smallest traces of dirt. (B) [substeps] To increase the dirt fighting potential of your damp cloth, mix 1 tsp (5 ml) of dish soap with a ¼ gallon (1 l) of water. Douse your rag in this, and wipe down the boots. (C) [title] Grind three pounds (177 g) of dry powder on a coffee grinder. [step] The dry powder will help to transfer dirt and dust to the boots. (D) This will clear little dirt and grime off of your boots, leaving them looking brand new. [substeps] If your boots are already cleaned, you may need to consult a shoe store or partner to inspect them for a better cleaner.
[EX A]: B

[EX Q]: [header] How to reduce acne using a tea tree face mask [title] Combine 1 teaspoon of raw, organic honey and 1-2 drops of tea tree oil in a bowl. [step] Put the honey in a clean bowl. Then, carefully pour the tea tree oil into the honey. <sep> (A) You may be using more than one tea tree oil. [substeps] If you are using the same amount of honey, one teaspoon is sufficient. (B) [substeps] It's best to use half tea tree oil for at least one week and once a week it should be reduced by 20 to 25 %. Do not use tea tree oil using the daily lotion, blush, or face powder. (C) Use a small spoon to mix the ingredients together. [substeps] If the honey is very thick, you can warm it up over the stove to make it a bit softer, but don't allow the honey to get too hot or you may end up destroying its antibacterial properties. (D) For detailed instructions, check the instructions for further instructions. Do not forget to mix and match the honey.
[EX A]: C

[EX Q]: The wakeboarder does front and back flips in the air and sometimes lands in water but gets right back on the board. He continues to wakeboard as the people in the motorboat smile and wave at him. he <sep> (A) waves back then immerres under another body full of water just as a woman kneels by him and gives him a hug. (B) finally grabs his board and paddles to go back to the water, but falls over a bit on his way back. (C) does various stunts on the board, fallls into the water but springs right back up on the board. (D) has a fun time wakeboarding in the water as the people walk on the side.
[EX A]:
C