How Did the Hatch Act Reinforce Reforms Initiated Under the Pendleton

How did the Hatch Act reinforce reforms initiated under the Pendleton Act?

A) The spoils system was modified to the party in power in the legislature rather than in the executive branch.
B) It established the Secret Service to protect the president from assassins after Garfield was shot.
C) It further restricted political influence on the bureaucracy by preventing federal employees from engaging in political activities.
D) Federal employees were hired on the basis of party loyalty rather than a merit system after the reforms.