42. Doris was 70 12 on May 20, 2017. The bank which held her IRA account had indicated that she would be required to take a Required Minimum Distribution (RMD) of $3,000. She took her RMD on June 30, 2018, since it was the year after the year in which she turned 70 12. Assume that her federal tax rate is 22%. What amount of federal taxes must she pay on her $3,000 withdrawal? a) $ 660 b) $2,160 c) $1,500 d) $ 960