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 turn forty gracefully [title] Set a realistic weight goal. [step] A realistic weight goal should be based on the body and limits of your current self, not the self you wish you had or the self you had twenty years ago. Your goal should be specific and measurable, and limited in time. <sep> (A) [substeps] For example, if you are 35 years of age and have an empty stomach, then set a goal to lose ten pounds in thirty years from now on. Keep in mind that you will not see the difference in yourself if you start getting older. (B) If you are unable to accomplish a current weight goal, you should also consider setting another goal, often known as a baptism goal. Baptism goals provide an answer to both your doubting thoughts and worried questions. (C) [substeps] For instance, a goal to lose twenty pounds is a good goal. A goal that is vague like " i want to get fit " is not measurable. (D) [substeps] For example, if you are looking to reduce your overall physical limits, you might set realistic weight goals. For example, you might set out to lose 30 pounds in one year and then lose 20 pounds in another year, and then lose 25 pounds within that year.

Ex Output:
C


Ex Input:
This video allows viewers to hear the testimony of a customer who has used the pro roofing service. First the man tells how he heard about the service and how great it is. he <sep> (A) also says that he chose pro roofing because the neighbors chose it and persuaded him by telling how great the service is. (B) gets the materials to do the job and is joined by a group of small children who are drinking lemonade at the lemonade stand and talking. (C) starts by explaining how he is going to first tell the detail of creating a casing using an iron, then he starts on eggs and bacon. (D) talks about some graphic details.

Ex Output:
A


Ex Input:
[header] How to buy pet training supplies [title] Visit the pet store. [step] Go to your local brick-and-mortar store are browse the shelves for possible training items. The stores are generally organized according to animal so you should have little difficulty finding the section that you need. <sep> (A) [title] Know your need for training or purchasing materials. [step] Learn the proper types of supplies, and research the requirements before proceeding with your training process. (B) [substeps] Look in the follow guide to find a pet store that specializes in training, however you want to make sure that the store does not possess pet equipment that could cause injury or harm. [title] Make sure that they offer the required training. (C) Ask store workers about items that they would recommend or avoid. [substeps] One way to get an extra level of insight is to ask workers, " what training items are frequently returned and why? " this tells you the training supplies that you should generally avoid due to the high level of customer dissatisfaction. (D) [substeps] Pet stores offer places to buy training supplies and staff, so ask if there is a complete list of supplies before buying them. Many stores are privately owned so they cannot charge.

Ex Output:

C