Which sentence below would make a good concluding sentence in a paragraph about the need to control​ credit-card spending?
A.
College students need to be careful with their money in every way.
B.
So watch how you use your credit​ cards, for it could take years to pay off your debts.
C.
An​ 82-inch LCD flat panel TV screen can cost up to​ $46,465.
D.
Many students find it difficult to get a credit card.