Find the Differential Dy of the Function $y = - 2 x ^ { 5 / 6 }$

Multiple Choice

Find the differential dy of the function $y = - 2 x ^ { 5 / 6 }$ .

A) $x ^ { 5 / 6 } \ln ( - 2 )$
B) $\frac { 5 } { 6 } x ^ { - 1 / 6 } d x$
C) $- 2 x ^ { - 1 / 6 } d x$
D) $- \frac { 5 } { 3 } x ^ { - 1 / 6 } d x$
E) $- \frac { 5 } { 6 } x ^ { - 1 / 6 } d x$