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". 

[header] How to make simple five minute frosting [title] Beat the butter in a medium-sized mixing bowl until smooth and fluffy. [step] You can use an electric mixer or a food processor. [title] Add the powdered sugar a small amount at a time. <sep> (A) [step] Use the stand mixer to mix the ingredients on medium speed until smooth and sugar dissolves. Add the vanilla, milk, and eggs. (B) [step] It will increase the strength of the frosting gradually. [title] Once 1 ½ teaspoons of powdered sugar is added, whip the butter. (C) [step] The mixture will appear dry and crumbly at first, but it will become smoother. [title] Gradually stir in the half-and-half or milk until you have reached your desired consistency. (D) [step] The more powdered sugar the healthier the frosting is. [title] Add the vitamin e oil, and stir to combine.
C

[header] How to elevate your hand while sleeping [title] Sleep on your back or side. [step] In order to elevate your hand while you're sleeping, you'll need to sleep on your back or on the side opposite of the arm that needs elevation. This is the easiest resting position for elevating your hand. <sep> (A) [substeps] Lying on your side not only has been shown to help alleviate hand inflation, but it also improves circulation in and around the hand and wrist joints. It's also more efficient than sleeping on your side. (B) [substeps] You can use a pillow to support your arm when you start to feel like your hand's elevating off the ground. Place a rolled up towel over your head to help prevent air from pooling near your arm. (C) [substeps] Sleeping on your stomach won't allow you to elevate your hand as easily. It's much harder to prop it up from behind if you're lying flat on your stomach. (D) [substeps] Lie on your back with the pillow propping your head up at a 45 degree angle. Your dominant hand should support the bottom of your pillow.
C

[header] How to make cucumber juice [title] Peel your cucumbers. [step] The skin of a cucumber is coated in a protective wax. While you can eat this coating without much problem, the wax will distort the texture of cucumber juice. <sep> (A) Doing so will cause a new layer of cucumber to form on top of the old layer. [substeps] Peel the cucumbers a little at a time. (B) Peeling the cucumber will strip the cucumber completely of its oils, leading to soft, crunchy, and tender flesh. [substeps] Yogurt is generally best when prepared this way. (C) You can accomplish this task by using either a potato peeler or a sharp knife with a smooth blade. [title] Slice off the ends of your cucumbers using a sharp knife. (D) You can peel your cucumbers by hand or with a peeler. [substeps] Cucumbers that are smooth and juice-free are better than cucumbers that are not smooth.

C