Select the INCORRECT pair of matches with regard to the type of asphalts.

1. Mastic asphalt - It is the pitch residue obtained by the evaporation of the volatile constituent of coal tar.

2. Liquid asphalt - It is the viscous residue obtained by the distillation of asphaltic base crude oil.

3. Cut-back asphalt - It is derived by the distillation of asphalt in a volatile solvent.

4. Refined asphalt - It is obtained by heating pitch to drive off the water and to draw off the mineral matter.