How many total votes of Electoral College are there for US Presidential Election?

How many total votes of Electoral College are there for US Presidential Election?A. 438
B. 538
C. 328
D. 528

Of the current 538 electors, an absolute majority of 270 or more electoral votes is required to elect the president and vice president. If no candidate achieves an absolute majority there, a contingent election is held by the U.S. Congress to elect the president and vice president.