Solve the Problem $\mathbf { v } = - \mathbf { i } - \mathbf { j }$

Multiple Choice

Solve the problem.
-If $\mathbf { v } = - \mathbf { i } - \mathbf { j }$ , find $\| v \|$ .

A) 0
B) $\sqrt { 2 }$
C) 2
D) 1