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]: People are standing in a swimming pool. they <sep> (A) are playing a game of water polo. (B) put on protective caps to ward off the cold. (C) dip a sponge into the water. (D) push themselves through a hole in the water.
[EX A]: A

[EX Q]: [header] How to make cream cheese brownie cupcakes [title] Pour the brownie mix into a bowl. [title] Stir using a wooden spoon instead of a mixer. [step] This will make the brownies more fluffy. <sep> (A) [title] Refrigerate the brownie mix overnight. [step] This will take care of any prep while the mixture is being made. (B) It's up to you which way you like your brownie! [title] Pour the brownie mix into each cupcake cupcake tube. [step] The height of each tube makes up roughly two cups of brownie mix. (C) This recipe is going to make the brownies more cake-like, which means we'll use an extra egg. [title] Preheat your oven at 350 ° f (177 ° c). (D) [title] Whisk together the dry ingredients in a mini mixing bowl. [step] If the dry ingredients are too wet, move on to the fluffy one.
[EX A]: C

[EX Q]: [header] How to know if your child is too skinny [title] Weigh your child regularly. [step] A good sign your child is is healthy and not too skinny is if they are steadily gaining weight as they grow. Weighing your child regularly can help you calculate things such as body mass index (bmi) as well as ensure your child is adding weight as they get taller. <sep> (A) This can help you place him where he fits best in the equation. Generally, bmi ranges between 130 and 69.6. (B) [substeps] Use a scale that is properly calibrated. You may even want one that can weigh to fractions of a pound this will give you the most accurate reading of your child's weight. (C) Bmi refers to how many calories someone is consuming each day and how many calories they eat in a day. People who weigh too heavy weigh themselves as a percentage based on age or gender. (D) This can also show your child that healthy weight is a sign of age. Bmi is the " weight required " of any person over the age of 12 in any sexual situation.
[EX A]:
B