The correct option is A A- III, B- I, C- IV, D- II
Colchicine is a mitotic poison. It arrests the formation of mitotic spindles during metaphase.
Cyclosporin A is an immuno-suppressant used during organ transplantation to prevent graft rejection by the recipient.
GABA stands for gamma butyric amino acid and it is an inhibitory neuro-transmitter that blocks impulses between nerve cells and the brain.
Mifepristone (also known as RU 486) is used to cause an induced abortion during the early stage of pregnancy. It can be used up to the 10th week of pregnancy under the supervision of a doctor.