Read the following details. To open a savings account at North Bank, a customer must deposit at least $100 into the account. To open a checking account at North Bank, a customer must deposit at least $500 into the account. Gervais opened a savings account at North Bank, but not a checking account. Which conclusion can be logically drawn based on these details? Gervais does not have $50. Gervais has at least $100. Gervais has banked at North Bank before. Gervais does not need a checking account.