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?
A) Deposit $20 in the first week and withdraw $270 in the second week.
B) Deposit $270 in the first week and withdraw $20 in the second week.
C) Deposit $20 in the first week and withdraw $250 in the second week
D) Deposit $250 in the first week and withdraw $20 in the last week.

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