Seven capacitors each of capacitance \(2, \ldots F\) are to be connected to obtain a capacitance of \(10 / 11 \mu \mathrm{F}\). Which of the following combination is possible?
(a) 5 in parallel, 2 in series
(b) 4 in parallel, 3 in series
(c) 3 in parallel, 4 in series
(d) 2 in parallel, 5 in series