a b c d

a

$ \text{u = -25cm , f = -10cm }$ $\Rightarrow \frac{1}{v} = \frac{1}{F} - \frac{1}{u} = \frac{1}{-10} - \frac{1}{-25} = \frac{-3}{50}$ $\Rightarrow v = \frac{-50 cm}{3}$ $ m = \frac{h_i}{h_0} = -\frac{v}{u} = -\frac{2}{3}$ $ h_i = -2cm $ $\Rightarrow Area = 4cm^2 $