In which condition can real gas obey closely the ideal gas equation?

Question

$\begin{array}{1 1} \text{(a) pressure is very small and temperature is very high} \\ \text{ (b) pressure is very high and temperature is very low} \\ \text{ (c) both pressure and temperature are very high} \\ \text{ (d) both pressure and temperature are very low} \end{array}$