The answer is A.
CD(Certificate of Deposit) is similar to a saving account, but it has additional perks. There is a minimum amount of money you have to deposit and you have to deposit that money for a certain amount of time (term). CDs have better interest rate than savings accounts, but if you withdraw your money before the term you pay penalties.
This makes them a good option for people have some extra money that they won't need in a near future.