# A balloon which always remain spherical has a variable diameter$\frac{3}{2} (2x+ 3)$ : Determine the rate of change of volume w.r.t x
$(A)\; \frac{27\pi}{8} (2x + 3)$
$(B)\; \frac{9 \pi}{8} (2x + 3)^2$
$(C)\; \frac{27 \pi}{8} (2x + 3)^2$
$(D)\; -\frac{9 \pi}{8} (2x + 3)^2$