Detailed Instructions: 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".
Q: [header] How to buy a used airplane [title] Choose the right airplane for you. [step] Determine what your needs are now, not what you expect them to be in the future. Are you going to use the airplane primarily for family trips, or will it be used for business? Also consider your budget. <sep> (A) If you are planning to drive your friends and family into town or if you will have to commute to and from work, you will need a good plane. It could be a mercedes or other classic old model. (B) [substeps] What you pay for an aircraft is only part of the cost of ownership. Don't forget to include the cost of operation and maintenance. (C) What do you need it for? Taking into account what you will be doing for money, and the vacation time you plan to take. [title] Decide whether you want a smaller or larger airplane. (D) [title] Ensure in advance of the flight what you need : [substeps] Enough seats to accommodate several passengers. Children need enough room for themselves and will thrive in a smaller space.
A:
B