For the circuit illustrated, the resistance of resistor Y is four times the resistance of resistor X. What is the difference $V_Y - V_X$ between the voltages indicated by the voltmeters?
- A$2.0\,\text{V}$
- B$5.0\,\text{V}$
- C$6.0\,\text{V}$
- D$8.0\,\text{V}$