Hence slope of graph will give capacitance. Slope will be more in parallel combination. Hence capacitance in parallel should be \(50\, \mu \mathrm{F}\) and in series combination must be \(8\, \mu F\). Only in option \(40\, \mu F\) and \(10\, \mu \mathrm{F}\).
\(C_{Parallel} \) \(=40+10=50 \,\mu F\)
\(C_{series}\) \(=\frac{40 \times 10}{40+10}=8\, \mu \mathrm{F}\)