If 4(cosec2 57° - tan2 33°) - cos 90° - y tan2 66° tan2 24° \(=\dfrac{y}{2}\), the value of y is:

• A. \(\dfrac{1}{3}\)
• B. \(\dfrac{8}{3}\)
• C. \(8\)
• D. \(\dfrac{3}{8}\)