If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is
A. $$\frac{{{\text{W}}{{\text{R}}^2}}}{{16}}$$
B. $$\frac{{2{\text{W}}{{\text{R}}^2}}}{{16}}$$
C. $$\frac{{3{\text{W}}{{\text{R}}^2}}}{{16}}$$
D. Zero
Answer: Option C
Please give the correct answer with an explanation.