Q.
A. (α-γ)(β-γ)(α+δ)(β+δ)
B. (α+γ)(β+γ)(α+δ)(β+δ)
C. (α+γ)(β+γ)(α-δ)(β+δ)
D. (α-γ)(β-γ)(α-δ)(β-δ)
E. None of the above
Correct choice: A
Explanation: