If phase sequence is acb then phase voltage Va, Vp and Ve are respectively a. 231/60, 231/180, 231/-90O b. 231/30 , 231/150 , 231/-90O C. 231/-30, 231/-150, 231/90 O 0, 231/120 , 231/240 d. 231L O A balanced three-phase Y-connected load has one phase voltage V 277/60 V. The phase sequence is abc. : The line to line voltage VCA is a. 399/-45 V O b. 399/45 V O C. 480/-30 V O d. 480/90 V O