What is the length of the diagonal of the rectangular solid shown? The figure shows a rectangular box of length 12 centimeters, width 8 centimeters, and height 14 centimeters. The diagonal of this rectangular box is the hypotenuse of a right triangle and the height of the rectangular box is the height of the triangle. One of the faces with dimensions 14 centimeters and 8 centimeters is shaded. A. 14.42 centimeters B. 16.12 centimeters C. 18.44 centimeters D. 20.10 centimeters