In the Original Constitutional System

In the original constitutional system,

A) each presidential elector cast two ballots,with the top vote-getter named president and the runner-up named vice president.
B) the Senate elected the president,and the House of Representatives elected the vice president.
C) each presidential elector cast one ballot for one of the president/vice president teams running.
D) the state legislatures elected the president and vice president,with the candidate getting the second-most votes becoming vice president.
E) the president,once elected by the Electoral College,chose the vice president.