Find the Curvature of the Curve $\mathbf { r } ( t ) = 6 t \mathbf { i } + 6 t \mathbf { j } + 3 \mathbf { k }$

Multiple Choice

Find the curvature of the curve $\mathbf { r } ( t ) = 6 t \mathbf { i } + 6 t \mathbf { j } + 3 \mathbf { k }$ . Select the correct answer.

A) $6 \sqrt { 2 }$
B) 0
C) 9
D) 1