At low pressure , the Van der Waal's equation is written as

Question

$(a)\;\large\frac{PV}{RT} = [1-\large\frac{a}{RTV}]\qquad(b)\;\large\frac{PV}{RT} = [1-\large\frac{RTV}{a}]\qquad(c)\;\large\frac{PV}{RT} = [1+\large\frac{a}{RTV}]\qquad(d)\;\large\frac{PV}{RT} = [1+\large\frac{RTV}{a}]$