Find the Derivative of Y with Respect to the Appropriate $$y = ( 1 - 8 t ) \operatorname { coth } ^ { - 1 } \sqrt { 8 t }$$

Multiple Choice

Find the derivative of y with respect to the appropriate variable.
- $$y = ( 1 - 8 t ) \operatorname { coth } ^ { - 1 } \sqrt { 8 t }$$

A) $( 1 - 8 \mathrm { t } ) \operatorname { coth } ^ { - 1 } \sqrt { 8 \mathrm { t } }$
B) $\frac { \sqrt { 8 } } { 2 \sqrt { t } } - 8 \tanh ^ { - 1 } \sqrt { 8 t }$
C) $- 4 \mathrm { t }$
D) $\frac { \sqrt { 8 } } { 2 \sqrt { t } } - 8 \operatorname { coth } ^ { - 1 } \sqrt { 8 t }$