The positive, negative and zero sequence impedances of 3-phase synchronous generator are j 0.5 pu, j 0.3 pu and j 0.2 pu respectively. When symmetrical fault occurs on the machine terminals. Find the fault current. The generator neutral is grounded through reactance of j0.1 pu

A

-j 3.33 pu

B

-j 1.67 pu

C

-j 2.0 pu

D

-j 2.5 pu