Two Vectors $\overrightarrow { \mathrm { A } }$ And $\vec { B }$

Multiple Choice

Two vectors $\overrightarrow { \mathrm { A } }$ and $\vec { B }$ are given by $\overrightarrow { \mathbf { A } } = 5 \hat{ \mathbf { i } } + 6 \hat { \mathbf { j } } + 7 \hat{ \mathbf { k } }$ and $\overrightarrow { \mathbf { B } } = 3 \hat { \mathbf { i } } - 8 \hat { \mathbf { j } } + 2 \hat { \mathbf { k } }$ .If these two vectors are drawn starting at the same point,what is the angle between them?

A) 106 $\degree$
B) 102 $\degree$
C) 110 $\degree$
D) 113 $\degree$
E) 97 $\degree$