Why Did the U

Why did the U.S.Supreme Court halt executions in all states in 1972?

A) Capital punishment was halted for three months as the Supreme Court investigated the legality of it when the U.S. signed a UN humanitarian charter the same year.
B) It declared capital punishment unconstitutional as it violated the constitutional prohibition of cruel and unusual punishment because it could be applied in a discriminatory fashion.
C) Earlier that year, Congress had passed legislation banning the death penalty, and the U.S. Supreme Court upheld it following a lengthy court battle.
D) A five-month moratorium was placed on the death penalty after it was revealed that in the previous year fifty-six people were wrongly executed following the discovery of new evidence
E) It declared that several execution methods were cruel and unjust, and banned the death penalty until lethal injection was introduced in all states that had capital punishment.