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

Multiple Choice

Assume $x$ and $y$ are functions of $t$ . Evaluate $d y / d t$ .
- $\mathrm{x}^{3}+\mathrm{y}^{3}=9 ; \frac{\mathrm{dx}}{\mathrm{dt}}=-5, \mathrm{x}=2$

A) $\frac{5}{4}$
B) $\frac{4}{5}$
C) -20
D) 20