Tony Just Received His Checking Account Statement from His Bank

Tony just received his checking account statement from his bank. He has a NOW account with free checking that pays 0.75% APR on the balance and requires a $500 minimum balance. His statement shows that he currently has a balance of $3,950. In looking at his statement he notices that his car payment check for $400 is still outstanding, and that his recently received payroll deposit of $3,600 had not posted at the time the statement was created. His normal living expenses average $1,500 per month including his car payment. Other than his car loan, he rarely writes any checks as he prefers to use his debit card and ATM card for day-to-day living expenses. He pays his credit card balance in full every month. Other than his checking account he does not own any investments. He has always dreamed of owning a house, and would like to buy one within the next five years. He has access to a 401K pension plan at work where his employer will match contributions up to 6% of his salary. He currently contributes 2% of his salary to this plan.
-How is Tony doing with his cash management?

A) He is doing pretty well since he has a lot of cash in his checking account.
B) He is doing pretty well since he pays his credit cards in full every month.
C) He is not maximizing his returns on his liquid assets.
D) He has a good checking account.
E) All but C are correct answers.