The angle of elevation of the top of tower B from the top of the tower A is 28° and the angle of elevation of the top of tower A from the base of the tower B is 46°. The two towers lie in the same horizontal plane. If the height of the tower B is 120 m, find the height of tower A.

A. 87.2 m

B. 79.3 m

C. 90.7 m

D. 66.3 m