The value of sec4A(1 - sin4A) - 2tan2A is?

Answer: Option D

$$\begin{array}{rl}& \text{According to the question ,}\\ & \text{ se}{\text{c}}^4\text{A}\left(1-{\sin }^4\text{A}\right)-2\text{ta}{\text{n}}^2\text{A}\\ & \text{Put A}=45^{\circ }\\ & \Rightarrow \text{ se}{\text{c}}^{4}45^{\circ }\left(1-{\sin }^4{45}^{\circ }\right)-2\text{ta}{\text{n}}^{2}45^{\circ }\\ & \Rightarrow 4\left(1-\frac{1}{4}\right)-2\\ & \Rightarrow 4\times \frac{3}{4}-\text{2}\\ & \Rightarrow 3-2\\ & \Rightarrow 1\end{array}$$