Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is

A)
6.3 m/sec
B)
9.3 m/sec
C)
7.3 m/sec
D)
8.3 m/sec

Correct Answer :   9.3 m/sec