Determine $\text { u v }$ If $\| \mathbf { u } \| = 5$

Multiple Choice

Determine $\text { u v }$ if $\| \mathbf { u } \| = 5$ , $\| \mathbf { v } \| = 4$ , and $\theta = \frac { \pi } { 4 }$ where $\theta$ is the angle between u and v.Round answer to two decimal places.

A) 15.73
B) 12.07
C) 10.00
D) 17.32
E) 14.14