Which of the following reactions is described by the equilibrium constant expression
$K_{\mathrm{eq}}=\frac{[\mathrm{A}]^{2} \times[\mathrm{B}]^{3}}{[\mathrm{C}]^{3} \times[\mathrm{D}]^{2}}$
(a) $\mathrm{A}_{2}+\mathrm{B}_{3} \rightleftarrows \mathrm{C}_{3}+\mathrm{D}_{2}$
(b) $2 \mathrm{~A}+3 \mathrm{~B} \rightleftarrows 3 \mathrm{C}+2 \mathrm{D}$
(c) $3 \mathrm{C}+2 \mathrm{D} \rightleftarrows 2 \mathrm{~A}+3 \mathrm{~B}$
(d) $A^{2}+B^{3} \rightleftarrows C^{3}+D^{2}$
(e) $2 C+3 D \rightleftarrows 3 A+2 B$
