$A$ spherical snowball is melting such that its volume is decreasing at the rate of $8 \text{ cm}^3/\text{s}$. Find the rate of change of the radius when the radius is $2 \text{ cm}$.
- AThe radius is increasing at the rate of $\frac{1}{2\pi} \text{ cm/s}$
- BThe radius is decreasing at the rate of $\frac{1}{2\pi} \text{ cm/s}$
- CThe radius is increasing at the rate of $\frac{1}{\pi} \text{ cm/s}$
- DThe radius is decreasing at the rate of $\frac{1}{\pi} \text{ cm/s}$
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