In which of the following sets, all the properties belong to same category (all extensive or all intensive) ?

• Enthalpy: It is the result of sum of internal energies of system and product of its pressure and volume. It is a state function
• Internal energy: The amount of total energy present in a system. It is a state function
• Volume: The size of container alters the value of volume. Therefore volume depends on size of the substance. It is also a state function

All these three are depend upon the amount of substance present in the system