Select the correct option from the given alternatives: The principal solution of equation `cot2theta = 0` are A) `[frac{pi}{4},frac{3pi}{4},frac{5pi}{4},frac{7pi}{4}]` B) `[frac{pi}{4},pi]` C) `[frac{pi}{2},pi,frac{3pi}{2},2pi]` D) `[frac{pi}{4},frac{3pi}{4}]`

Options

A. `[frac{pi}{4},frac{3pi}{4},frac{5pi}{4},frac{7pi}{4}]`
B. `[frac{pi}{4},pi]`
C. `[frac{pi}{2},pi,frac{3pi}{2},2pi]`
D. `[frac{pi}{4},frac{3pi}{4}]`