The terminal velocity of ball of radius R inside a liquid of viscosity η can be written as VT=
2R2g
n
(σ−ρ), where σ is the density of ball and δ is the density of the liquid. Hence, A is correct since VT∝R2 gives a parabola on a graph C is correct since VTα
1
η
and η varies with temperature D is correct since VTα(σ−ρ) i.e., varies with density of liquid.