Three faces of a rectangular box meet at a corner of the box. The centers of these faces form the vertices of a triangle having side lengths of 4\:cm,5\:cm and 6\:cm. The volume of the box, in cm^3, is
Answer Choices
A. 45\sqrt3
B. 45\sqrt6
C. 90\sqrt6
D. 125
E. 120\sqrt2