The correct options are
A Purification of sugar
B Making paints
Animal charcoal is obtained by the charring of blood or bones of animals. It is used to purify sugar. The distillation of bone charcoal gives ivory black, which is used in making paints.
However, lampblack is used in making shoe polish because of its deep black colour.
Activated charcoal is obtained from plant charcoal. It is used to make gas masks for people working in coal mines as the small pores in them can filter out gases like ammonia. These gases can be poisonous if inhaled in large quantity.