A square column carries a load P at the centroid of one of the quarters of the square. If a is the side of the main square, the combined bending stress will be
A
$$\frac{{\text{P}}}{{{{\text{a}}^2}}}$$
B
$$\frac{{2{\text{P}}}}{{{{\text{a}}^2}}}$$
C
$$\frac{{3{\text{P}}}}{{{{\text{a}}^2}}}$$
D
$$\frac{{4{\text{P}}}}{{{{\text{a}}^2}}}$$
Correct Answer: $$\frac{{3{\text{P}}}}{{{{\text{a}}^2}}}$$