Find the Unit Vector Having the Same Direction as V $$\mathbf { v } = - 4 \mathrm { j }$$

Multiple Choice

Find the unit vector having the same direction as v.
- $$\mathbf { v } = - 4 \mathrm { j }$$

A) $u = - 4 j$
B) $\mathbf { u } = 16 \mathrm { j }$
C) $\mathrm { u } = - \frac { 1 } { 4 } \mathrm { j }$
D) $\mathbf { u } = - \mathbf { j }$