19. In the gure the current in resistance 6 is i6 = 1.39 A and the resistances are R1 = R2 = R3 = 2.40 S2, R4 = 14.5 $2, R5 = 7.23 S2, and R6 = 4.08 9. The emf of the ideal battery is: A) 22.3 V B) 49.3 V C) 14.7 V D) 98.1 V E) 72.5 V