9log9(4) = ?  Choose the correct choice
A) 1
B) 2
C) 3
D) 4
E) 5
Exponential and log functions are inverse of each other. Hence   aloga(x) = x , for all x real and positive.   and therefore   9log9(4) = 4   correct answer 4
<result>D</result>
9log9(4) = ?