Kathy is 60 years of age and self-employed. During 2018 she reported $509,000 of revenues and $102,250 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 $55,000. $61,000. 561.00 S78.69 $78,669. $375,634