The diagram displays a battery, a fixed resistor, an ammeter and a variable resistor joined in series. A voltmeter is connected across the fixed resistor. The resistance of the variable resistor is decreased. Which row shows how the readings on the ammeter and the voltmeter change?
- Aammeter: decrease; voltmeter: decrease
- Bammeter: decrease; voltmeter: increase
- Cammeter: increase; voltmeter: decrease
- Dammeter: increase; voltmeter: increase