Arthur has an April credit card balance of $325.24. His repayment date is the 25th of every month, with a grace period of 5 days. If his payment is late, the credit card company charges him a $25 late fee. Arthur wants to repay the full amount to have a zero balance. How much should Arthur pay if his online payment is processed on May 1?
$325.24, the April balance
$25, the April late fee
$350.24, the April balance plus the late fee
$300.24, the April balance minus the late fee