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 find a penpal [title] Think about what you want to send. [step] There are many different ways to correspond with a penpal, and deciding on the one that's right for you makes it easier to sort through the number of penpal websites on the internet. Some people prefer communicating electronically while others like to use penpals as a means of creative communication. <sep> (A) [substeps] The international union of mail-artists is a website dedicated to those who like sending postal art to their penpals. Iumoa is a much more niche community as it has roughly 4 , 000 active members. (B) Read the different penpal websites carefully and decide on the one you wish to write a message for. [title] Enter the number and contact information you would like to use in the address bar (in the upper right hand corner of the web page). (C) [substeps] Remember that there is no set password to choose from across a thousands of websites, but feel free to use whatever feels most comfortable for you. [title] Narrow the search criteria to near the lowest classifications. (D) Some people like to send messages on social media or email, while other people prefer to send text messages or instant messages. [title] Decide which websites you want to find.

Ex Output:
A


Ex Input:
[header] How to spot an online scam [title] Ask yourself: do they require you to pay money up front? [step] If they are requiring any sort of up front payment to use their services, it is almost always a scam. Many of them will claim that it's for the cost of training, etc. Most of that is just lies. <sep> (A) More often than not, the scammer will take your money and run. [title] Ask yourself: do they promise that you will become rich overnight? [step] Let's face it. (B) They may also require you to pay them a fee to do the work of the scam. [title] Start by taking note of the offer terms. (C) If you fail to pay them back, they won't actually use the services they have. Sometimes, scammers simply want to get their money from you to start their scam. (D) Do not discuss this with anyone else, unless you know for sure that it is indeed a scam. [title] Determine whether you're being harassed.

Ex Output:
A


Ex Input:
. several bicycle racers dressed in motocross suits and wearing helmets <sep> (A) wander around a trails, acodea and down an alley with a trip sign attached to a bike. (B) are lined up at the start line, waiting to race. (C) talk about high dirt bike safety instructions before riding through heavy dirt and into a parking lot. (D) keep going down the track after one another, sometimes individually.

Ex Output:

B