The combined gas law formula $\dfrac{P_1V_1}{T_1} = \dfrac{P_2V_2}{T_2}$ gives the relationship between volume, temperature and pressure of two fixed amounts of gas. Which of the following gives $P_2$ in terms of the other variables?

Question

$\begin{array}{1 1} (a)\;P_1 = P_2 \\ (b)\; P_1T=P_2 \\ (c)\; \dfrac{P_1V_1T_2}{T_1V_2} = P_2 \\ (d)\; \dfrac{P_1V_1V_2}{T_1T_2} = P_2 \end{array}$