Since the Goldwater-Nichols Act of 1986,designed to Reduce Interbranch Competition

Since the Goldwater-Nichols Act of 1986,designed to reduce interbranch competition among the various service branches,which of the following is true about the staff of the Joint Chiefs of Staff?

A) The staff serves the commanders of the individual service branches and reports back to the chair of the Joint Chiefs of Staff.
B) The staff serves only the chair of the Joint Chiefs of Staff,rather than the commanders of the individual service branches.
C) The staff serves all of the president's foreign policy advisors.
D) The staff serves the White House military intelligence corps and reports back to the chair of the Joint Chiefs of Staff.
E) The staff serves the secretary of defense,the secretary of Homeland Security,and the director of the Central Intelligence Agency and reports back to the chair of the Joint Chiefs of Staff.