Four 20- $\Omega$ Resistors Are Connected in Series and the Combination Is Connected

Multiple Choice

Four 20- $\Omega$ resistors are connected in series and the combination is connected to a 20-V emf device.The potential difference across any one of the resistors is:

A) 1 V
B) 4 V
C) 5 V
D) 20 V
E) 80 V