Match the following marker genes in Group I with suitable selecting agent in Group II.

Group I	Group II
P. nptII	1. Glyphosate
Q. aroA	2. Phosphinothricin
R. hpt	3. Kanamycin
S. bar	4. Hygromycin B

A. Phenylacetic acid B. Phenoxyacetic acid C. Acetic acid D. None of the above

A. Penicillium chrysogenum B. Saccharomyces cerevisiae C. Bacillus subtilis D. Streptomyces griseus

A. They form epoxides in presence of oxygen B. They do not form epoxides in presence of oxygen C. They have high ignition temperature D. They solidify at low temperature

A. P-3, Q-1, R-4, S-2 B. P-3, Q-4, R-1, S-2 C. P-2, Q-3, R-1, S-4 D. P-2, Q-1, R-4, S-3