Scalar (Dot) Product: a Rectangular Box Is Positioned with Its

Multiple Choice

Scalar (dot) product: A rectangular box is positioned with its vertices at the following points: A = (0,0,0) C = (2,4,0) E = (0,0,3) G = (2,4,3)
B = (2,0,0) D = (0,4,0) F = (2,0,3) H = (0,4,3)
If the coordinates all have three significant figures, the angle between the line segments AG and AH is closest to:

A) 21.8°.
B) 22.5°.
C) 26.6°.
D) 36.9°.
E) 45.0°.