The incomplete table below shows selected characteristics of gas laws.
\begin{tabular}{|c|c|c|c|}
\hline
Name & Variables & Constants & Equation \\
\hline
Boyle's law & Pressure, volume & Temperature, moles of gas & [tex]$P_1 V_1 = P_2 V_2$[/tex] \\
\hline
Charles's law & Volume, temperature & Pressure, moles of gas & [tex]$\frac{V_1}{T_1} = \frac{V_2}{T_2}$[/tex] \\
\hline
Gay-Lussac's law & Pressure, temperature & Volume, moles of gas & [tex]$\frac{P_1}{T_1} = \frac{P_2}{T_2}$[/tex] \\
\hline
Combined gas law & Pressure, temperature, volume & Moles of gas & \\
\hline
\end{tabular}
Which constants would most likely be filled in the first row of the table?
A. Temperature and moles of gas
B. Volume and temperature
C. Pressure and volume