Match the industrial products mentioned in Group I with their producer organisms in Group II

Q. Match the industrial products mentioned in Group I with their producer organisms in Group II

Group I                    Group II

P. Citric acid            1. Trichoderma viride

Q. Cellulase               2. Clostridium acetobutylicum

R. Vitamin B12             3. Aspergillus niger

S. Butanol           4. Propionibacterium freudenreichii

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