Two lightbulbs each with a resistance of 20 Ω are connected in series to a voltage of 120 V. If a third lightbulb of 20 Ω is added to the circuit, how will the current change?
A. It will remain the same.
B. It will increase from 40 A to 60 A.
C. It will decrease from 30 A to 20 A.
D. It will decrease from 60 A to 20 A.
