In the figure given below, for 180° mode of operation if T1 is fired at 0°. Then SCRs T3 and T5 should be fired at _________ and _________ respectively.

In the figure given below, for 180° mode of operation if T1 is fired

1.	In the figure given below, for 180° mode of operation if T1 is fired at 0°. Then SCRs T3 and T5 should be fired at _________ and _________ respectively.
A.	180°, 360°
B.	90°, 180°
C.	120°, 240°
D.	none of the mentioned
Answer» D. none of the mentioned