Correct option is C
Residual Bitumen:
It is obtained as a residue during the distillation of high-resin petroleum which is a solid substance at normal temperature.
Plastic Bitumen:
It consists of bitumen, thinner, and a suitable inert filler.
The amount of inert filler is about 40% to 45%.
Straight-run Bitumen:
When the bitumen is distilled to a definite viscosity or penetration without further treatment, it is known as straight-run bitumen.
