Under the general rule question they are asking me the contributions made to my plan. Does this mean 401k?

Maybe.

 

Who must use the General Rule.

 

Use this publication if you receive pension or annuity payments from:

1. A nonqualified plan (for example, a private annuity, a purchased commercial annuity, or a nonqualified employee plan); or
2. A qualified plan if:

1. Your annuity starting date is before November 19, 1996 (and after July 1, 1986), and you don't qualify to use, or didn't choose to use, the Simplified Method; or
2. Your annuity starting date is after November 18, 1996, and as of that date you are age 75 or over and the annuity payments are guaranteed for at least 5 years.