Which one is true for the mathematical expression 14(4x)2/(16x+1-2x+18x)

Which one is true for the mathematical expression 14(4^x)²/(16^x+1-2^x+18^x)

A 2

B 14

C 1

D 24x

Correct Answer: Option C

14(4x)2/(16x+1-2x+18x)

= 14 X (22x)2/24x+4-2x+1+3x =14 x 24x/24x.24-24x.2 =14x24x/24x(16-2) =14x24x/14x24x =1