Which of the Following Best Explains the President's Removal Powers

Which of the following best explains the president's removal powers?

A) The president has the power to remove executive officials,but this power does not extend to independent regulatory commissions.
B) The president has the power to remove any federal employee.
C) The president has the power to remove independent regulatory commission officials but not other executive officials.
D) The president has the power to remove members of the executive and judicial branches.
E) The president has the power to remove executive officials,including officials at independent regulatory commissions.