General solution of the equation
`sin^(3) theta cdot cos theta - sin theta cdot cos^(3) theta = 1//4` is `theta` =

Options

A. `n(pi//4) + (pi//8)`
B. `n(pi//2) +- (pi//8)`
C. `n(pi//4) + (-1)^(n+1) cdot (pi//8)`
D. `n(pi//8) + (-1)^(n) cdot (pi//8)`

Answer

C