Assume $x$ And $y$ Are Functions Of $t$ Evaluate $d y / d t$

Multiple Choice

Assume $x$ and $y$ are functions of $t$ . Evaluate $d y / d t$ .
- $\mathrm{x}^{3}+\mathrm{y}^{3}=9 ; \frac{\mathrm{dx}}{\mathrm{dt}}=-3, \mathrm{x}=1, \mathrm{y}=2$

A) $\frac{4}{3}$
B) $-\frac{3}{4}$
C) $-\frac{4}{3}$
D) $\frac{3}{4}$