Fill in the missing information in the table below:

| Name | Variables | Constants | Equation |
|---------------------|---------------------|-----------------------------------|------------------------------------|
| Boyle's law | pressure, volume | temperature, moles of gas | [tex]\( P_1 V_1 = P_2 V_2 \)[/tex] |
| Charles's law | volume, temperature | pressure, moles of gas | [tex]\( \frac{V_1}{T_1} = \frac{V_2}{T_2} \)[/tex] |
| Gay-Lussac's law | pressure, temperature | volume, moles of gas | [tex]\( \frac{P_1}{T_1} = \frac{P_2}{T_2} \)[/tex] |
| Combined gas law | pressure, volume, temperature | moles of gas | [tex]\( \frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2} \)[/tex] |

What are the variables in Gay-Lussac's law?

A. pressure and volume
B. pressure, temperature, and volume
C. pressure and temperature
D. volume, temperature, and moles of gas