What is the simplified value of \({\left[ {\frac{{co{s^2}\theta }}{{1\; + \;\sin \theta }} - \frac{{si{n^2}\theta }}{{1\; + \;\cos \theta }}} \right]^2}\)?

• A. sinθ
• B. 1 – sin2θ
• C. 1 + sin2θ
• D. 1 – sinθ