The cross-sectional area of the embankment of a canal fully in embankment in the given figure is

A. $$\frac{1}{2}\left( {{{\text{b}}_1} + {{\text{b}}_2}} \right){\text{h}}$$

B. $$\left( {{{\text{b}}_1} + {{\text{b}}_2}} \right){\text{h}} + {\text{s}}{{\text{h}}^2}$$

C. $$\left( {{{\text{b}}_1} + {{\text{b}}_2}} \right) + 2{\text{s}}{{\text{h}}^2}$$

D. $$2\left[ {\left( {{{\text{b}}_1} + {{\text{b}}_2}} \right)\left( {{\text{b}} + {\text{s}}{{\text{h}}^2}} \right)} \right]$$

Answer: Option C