Select the equivalent expression.


\[\left(\dfrac{3^4}{7^3}\right)^{3}=?\]
Choose 1 answer:
Choose 1 answer:
(Choice A)

\[\dfrac{3^{7}}{7^6}\]
A

\[\dfrac{3^{7}}{7^6}\]
(Choice B)

\[\dfrac{3^{3}}{7^3}\]
B

\[\dfrac{3^{3}}{7^3}\]
(Choice C)

\[\dfrac{3^{12}}{7^9}\]
C

\[\dfrac{3^{12}}{7^9}\]
(Choice D)

\[\dfrac{3}7\]
D

\[\dfrac{3}7\]

The equivalent expression is \[\boxed{\text{(Choice C) }\dfrac{3^{12}}{7^9}}.\]