Three capacitors with capacitances C₁ = 10C, C₂ = 5C, and C₃ = 2C are connected in series. Use C = 11 μF. Calculate the total capacitance (Cₜotal).

a) 2.2 μF
b) 3.7 μF
c) 5.5 μF
d) 6.4 μF