Three capacitors each of capacitance \[1\mu F\]are connected in parallel. To this combination, a fourth capacitor of capacitance \[1\mu F\] is connected in series. The resultant capacitance of the system is [MP PMT 1985]

• A.                    \[4\mu F\]
• B.                                      \[2\mu F\]
• C.                    \[\frac{4}{3}\mu F\]  
• D.            \[\frac{3}{4}\mu F\]