If a =$$(27)(3^{-2})$$and x =$$(6)(3^{-1})$$, then which of the f

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If a =$$(27)(3^{-2})$$and x =$$(6)(3^{-1})$$, then which of the following is equivalent to$$(12)(3^{-x})$$ x $$(15)(2^{-a})$$?

A、–2245 * 320 * 5
B、$$\frac{2}{5}$$
C、$$\frac{5}{2}$$
D、24 * 38 * 5
E、2245 * 320 * 5

答案：C

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