Problem

Which of the following statements about an ideal gas are correct? - I. At constant temperature,

\frac{p}{V} = \text{constant}

- II. At constant volume,

\frac{p}{T} = \text{constant}

- III. At constant pressure,

\frac{V}{T} = \text{constant}

a. I and II only b. I and III only c. II and III only d. I, II and III