In the case of hamdan v. rumsfeld, the u. s. supreme court held that the were outside the president's power to create and were, therefore, invalid.

In the case of Hamdan v. Rumsfeld, the U.S. Supreme Court held that the military comissions were outside the President's power to create and were, therefore, invalid.

Explanation:

Hamdan v. Rumsfeld is a case in which the Supreme Court of the United States sustained that military commissions stablished by the Bush administration to try detainees at Guantanamo Bay lack "the power to proceed" because its structures and procedures violate both the Uniform Code of Military Justice and the four Geneva Conventions signed in 1949.

the answer your looking for is c. : )