Find the Torsion of the Space Curve A) $\tau = - \frac { 6 } { 25 }$

Multiple Choice

Find the torsion of the space curve.
- $\mathbf { r } ( \mathrm { t } ) = \left( 2 + 10 \sin \frac { 2 } { 5 } \mathrm { t } \right) \mathbf { i } + 3 \mathrm { tj } + \left( 2 + 10 \cos \frac { 2 } { 5 } \mathrm { t } \right) \mathbf { k }$

A) $\tau = - \frac { 6 } { 25 }$
B) $\tau = \frac { 12 } { 5 }$
C) $\tau = \frac { 6 } { 25 }$
D) $\tau = \frac { 6 } { 125 }$