Brad's gross pay for the month is $5,400. His deduction for federal income tax is based on a rate of 18%. He has no voluntary deductions. His year-to-date pay is under the limit for OASDI. What is Brad's net pay? (Assume a FICA OASDI Tax of 6.2% and FICA Medicare Tax of 1.45%. Do not round any intermediate calculations, and round your final answer to the nearest dollar.) O A. $4,428 O B. $4,987 O C. $5,400 OD. $4,015