Area moment of inertia of a circular section of diameter D is?

• A. \(\frac{{{\rm{\pi }}{{\rm{D}}^3}}}{{32}}\)
• B. \(\frac{{{\rm{\pi }}{{\rm{D}}^4}}}{{32}}\)
• C. \(\frac{{{\rm{\pi }}{{\rm{D}}^3}}}{{64}}\)
• D. \(\frac{{{\rm{\pi }}{{\rm{D}}^4}}}{{64}}\)