For a 220 V, 60 Hz single phase voltage controller is used for controlling flow of power in to a circuit consisting load of X₁ = 122, and R=5Q. Which of the following represents the correct value of the maximum power and power factor? (a) Pmax 9.68 kW, p.f = 0.6 (b) Pmax 3.72 kW, p.f = 0.6 (c) Pmax=9.38 kW, p.f = 0.38 (d) Pmax 1.43 kW, p.f = 0.38