If a^x = b^4y, then  Choose the correct choice.
A) log a/b= x/y	B) log a/ log b = x/y	C) log a/ log b = 4y/x	D) log b/a = x/y	E) log b/a = y/x
a^x = b^4y =&gt; log a^x = log b^4y =&gt; x log a = 4y log b   =&gt; log a/ log b = 4y/x   ANSWER:log a/ log b = 4y/x
<result>C</result>
If a^x = b^4y, then