The correct answer is A & D; The grand jury included 16-23 citizens and also hears evidence to determine if the accused should stand trial.
Further Explanation:
There is one state in the U.S that uses less than the normal amount of grand jurors and that is Virginia. A grand jury is normally compromised of regular citizens who are chosen for the jury. There is anywhere from 16 to 23 jurors at any given time, depending on the reason for the grand jury. There are two types of grand juries, they are regular sessions and special sessions.
Communist forces ended the war by seizing control of South Vietnam in 1975, and the country was unified as the Socialist Republic of Vietnam the following year "Vietnam War: Causes, Facts & Impact - HISTORY"