Given the task definition and input, reply with output. 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 resume working after retirement [title] Determine what you want in advance. [step] It's important to know what you'd like to do before you start your job search. That includes the field you'd like to work in and your potential job title. <sep> (A) You can use any window of opportunity you have available to make a final assessment of the specific position that you desire. [substeps] Right out of the gate area of your job search, let applicants know exactly what they need. (B) These things will help you map out the things that you need to do to get you back on track. [title] Network through job groups and/or sponsored mentor groups. (C) Ideally, you may wish to return to your previous field in a similar job. However, you may have to look into related or totally new fields if you can't break back into your previous line of work. (D) While you could start just now, you should figure out what is open to you. [substeps] A good goal will be to earn enough money to continue working full time after retirement for approximately one year.
C