What Was the Posse Comitatus Act of 1878

What was the Posse Comitatus Act of 1878?

A) The first law to formalize federal disaster relief to both States and individuals and families in one place. It also created the authority for the President to issue emergency declarations.
B) It was designed to prevent terrorist attacks within the United States, reduce the vulnerability of the United States to terrorism, and minimize the damage, and assist in the recovery, from terrorist attacks that do occur within the United States.
C) It created a board designed to coordinate and have cognizance of Federal efforts and programs that relate to the protection of information systems key to critical infrastructure protection.
D) It forbids the use of military forces for the purposes of domestic law enforcement.