IF P = EI AND E = IR, P =(1) I2R(2)(3) E2R(4)(A) 1 ONLY(B) 4 ONLY(...

18. If P = EI and E = IR, P =(1) I

²

R(2)(3) E

²

R(4)(A) 1 only(B) 4 only(C) 1 and 4 only(D) 1 and 3 only(E) 2 and 4 only