If the Sides of a Rectangular Solid Are as Shown,and $s = 4$

Multiple Choice

If the sides of a rectangular solid are as shown,and $s = 4$ ,determine the angle,?,between the diagonal of the base of the solid and the diagonal of the solid.Round answer to two decimal places.

A) 21.91^o
B) 24.09^o
C) 17.21^o
D) 26.28^o
E) 19.86^o