The Electoral College consists of 538 electors. How is this number determined? A: 100 Senators, 435 House of Representatives, 3 electors from Washington, D.C. B: 435 Senators, 1000 House of Representatives, 3 electors from Washington, D.C. C: It is determined by the number of registered voters in each state. D: It is determined by the total population in each state.