Impeachment of the President Is One of the Checks on Government

Impeachment of the president is one of the checks on government set out by the Constitution that __________.

A) allows the House or Senate to charge the president with "high crimes and misdemeanors"
B) is so rare,it has only been used three times in history of the United States
C) requires a majority vote in the Senate to convict
D) requires a trial of the accused in the Senate to determine guilt or innocence