What Differentiates a Savings Deposit from a Small-Denomination Certificate of Deposit

What differentiates a savings deposit from a small-denomination certificate of deposit (CD) ?

A) A CD has a fixed maturity date; a savings deposit can be withdrawn at any time.
B) A savings deposit cannot be withdrawn before its maturity date without incurring a penalty; funds in a CD are available at any time with no interest penalty.
C) Only a savings deposit is a time deposit.
D) All depository institutions accept savings deposits, whereas only a thrift institution can issue a CD.