A three phase transmission line delivers a load of 5 MW at 0.8 power factor lagging. Resistance of each conductor is 0.5 ohm / km. Receiving end voltage is 33 kV. If the line loss is not to exceed 10%, determine the length of the line. 

(A) 7 km (B) 27.9 km (C) 56.8 km (D) 13.9 km
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