That every person holding any civil office to which he has been appointed by and with the advice and consent of the Senate ... shall hold their offices respectively for and during the term of the President by whom they may have been appointed
and ... subject to removal by and with the advice and consent of the Senate.

Based on the information in the excerpt, the Tenure of Office Act affected the separation of powers by

A. giving more power to the executive branch.
B. taking power from the military.
C. giving more power to the legislative branch.
D. taking power from the judiciary.