Derivative of a Composite Trigonometric Function

Question

Which of the following is the correct derivative of $$y=\sqrt{	an(2*x)}$$ using the Chain Rule?

Accepted Answer

$$\frac{\sec^2(2*x)}{\sqrt{	an(2*x)}}$$

Answer

$$\frac{\sec^2(2*x)}{	an(2*x)}$$

Answer

$$\frac{\sec(2*x)}{\sqrt{	an(2*x)}}$$

Answer

$$\frac{2*\sec^2(2*x)}{\sqrt{	an(2*x)}}$$