The circuit diagram shows a cell with constant internal resistance together with an external resistor $R$. A student notes the ammeter and voltmeter readings. She then adds a second external resistor identical to the first and connects it in parallel with the first external resistor. What change occurs in the ammeter reading and in the voltmeter reading?
- Adecreases, decreases
- Bdecreases, stays the same
- Cincreases, decreases
- Dincreases, stays the same