Equation of a tangent to the curve y cot x = y3 tanx at the point where the abscissa is π/4, is:
(A) 4x + 2y = π + 2
(B) 4x - 2y = π + 2
(C) x = 0
(D) y = 0
Correct Option :- (A) (B) (D)
Explanation :-