Which statement is/are correct about osmotic pressure ($\mathrm{\pi }$), volume (V)  and temperature (T)?

Osmotic pressure is defined as "the excess pressure that needs to be applied to a solution to prevent osmosis when a solution is separated from the solvent by a semi permeable membrane. It is usually denoted by '."
$$\begin{gathered} \mathrm{P}=\frac{\mathrm{n}}{\mathrm{V}}\mathrm{RT} \\ \frac{\mathrm{n}}{\mathrm{V}}=\mathrm{C} \\ \mathrm{P}=\mathrm{CRT} \end{gathered}$$
C = Concentration of the solution in moles per liter.
R = Gas constant.
T = Temperature.
n = Number of moles of the solute.
v = Volume of the solution in liters.
so,
P/V. if T is constant.
PT. if V is constant.
PV is constant, if T is constant. are correct relations.