Ann is opening a new savings account with an initial deposit of $250. Which combination of a deposit and a withdrawal will result in a zero balance in Ann's account?

ADeposit $20 in the first week and withdraw $270 in the second week.

BDeposit $270 in the first week and withdraw $20 in the second week.

CDeposit $20 in the first week and withdraw $250 in the second week

DDeposit $250 in the first week and withdraw $20 in the last week.

I don't get this pls help me!!!