Provide an Appropriate Answer $\frac { \partial z } { \partial v }$

Multiple Choice

Provide an appropriate answer.
-Find $\frac { \partial z } { \partial v }$ when $u = 0$ and $v = \frac { 11 \pi } { 2 }$ if $z ( x , y ) = \sin x + \cos y , x = u \cdot v$ , and $y = u + v$ .

A) $\frac { \partial z } { \partial v } = 1$
B) $\frac { \partial z } { \partial v } = 2$
C) $\frac { \partial z } { \partial v } = 0$
D) $\frac { \partial z } { \partial v } = - 1$