If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by
A. $${\text{B}}{\text{.M}}{\text{.}} = \frac{{{\text{pb}}\left( {{\text{c}} - {\text{a}}} \right)}}{4}$$
B. $${\text{B}}{\text{.M}}{\text{.}} = \frac{{{\text{pb}}{{\left( {{\text{b}} - {\text{a}}} \right)}^2}}}{4}$$
C. $${\text{B}}{\text{.M}}{\text{.}} = \frac{{{\text{pb}}{{\left( {{\text{b}} - {\text{a}}} \right)}^2}}}{8}$$
D. $${\text{B}}{\text{.M}}{\text{.}} = \frac{{{\text{pb}}\left( {{\text{b}} + {\text{a}}} \right)}}{8}$$
Answer: Option C

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