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 Input:
[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 Output:
C


Ex Input:
A person vacuum the inside of a car, while other men clean by hand the car with detergent and water. then <sep> (A) , a man tops small metal bin, cover it with rubber tape and throw it on the side, then the men polish and clean and polish the car outside in the grass around. (B) , a man dry the car with clothes. (C) , the men applies soap and ties the hair, after they dry with asian cloth. (D) , the man goes peolpe on the road.

Ex Output:
B


Ex Input:
[header] How to start a pellet stove [title] Read the instruction manual first. [step] An automatic start pellet stove doesn't require an igniter, like a lighter or match, in order to get started. Read the instruction manual so you know where to pour the pellets and any other details or warnings you need to know. <sep> (A) [substeps] The instruction manual will tell if you have an automatic or manual start pellet stove. Automatic pellet stoves will have a control panel with an on/off button or switch. (B) [substeps] If you are trying to start a pellet stove from scratch, always refer to the instruction manual to help you develop an optimal fuel start. [title] Fill the ring at the bottom of the opening to prevent your stove from falling off. (C) [substeps] To begin working inside the stove, retrieve an empty can about 2 inches (5.1 cm) in diameter. At this length, you will pour the pellets into the hopper, or bucket inside the hopper. (D) You also may want to refer to the stove's instruction manual to find out exactly how much of each pellet you'll need. You may want to write down the instructions inside the manual so you can refer to them throughout the cooking process.

Ex Output:

A