Kathy is 60 years of age and self-employed. During 2018 she reported $502,000 of revenues and $100,500 of expenses relating to her self-employment activities. If Kathy has no other retirement accounts in her name, what is the maximum amount she can contribute to a simplified employee pension (SEP) IRA for 2018? (Round your final answer to the nearest whole number)

Multiple Choice

A. $55,000.

B. $61,000.

C. $77,633.

D. $370,785.