Assuming a straight line V-I characteristics for adc welding g generator, short circuit current as..

Assuming a straight line V-I characteristics for adc welding g generator, short circuit current as 400Aand open circuit voltage as 400 which one of thefollowing is the correct voltage and current settingfor maximum arc power?(a) 400 A and 100 V (b) 200 A and 200 V(c) 400 A and 50 V (d) 200 A and 50 V