In square ABCD below, what is the value of (AC)(AD)/(AB)(DC) = ?

In square ABCD below, what is the value of ^(AC)(AD)/_(AB)(DC) = ?

A 1/2

B 2

C √2

D 1

Correct Answer: Option C

BC2 = AC2 + AB2

BC = √(x2+ x2) = √2x

(AC)(AD)/(AB)(DC)

= x.√2x/(x.x)

=√2