Which of the following will satisfy $$a^{2} = b^{2} + (ab)^{2}$$ for the values a and b?

A

$$a = \sin x , b = \cot x$$

B

$$a = \cos x , b = \tan x$$

C

$$a = \cot x , b = \cos x$$

D

$$a = \sin x , b = \tan x$$