Which of the Following Is Not a Difference Between Primary

Which of the following is not a difference between primary active transport and secondary active transport?

A) Primary active transport uses energy derived from ATP whereas secondary active transport does not
B) Primary active transport uses a carrier that is an ATPase whereas the latter does not
C) Primary active transport uses a carrier that is phosphorylated whereas the latter does not
D) Primary active transport uses a carrier whose binding affinity for the solute is modified by covalent modulation whereas the latter does not
E) None of the choices are correct