Match the items given in column-I with their examples given in column-II and choose the correct answer. Column-I Column-II A. Free living aerobic nitrogen I. Anabaena and Nostoc B. Anaerobic nitrogen fixers II. Pseudomonas and Thiobacillus C. Nitrogen fixing cyanobacteria III. Nitrosomonas and Nitrococcus D. Denitrifying bacteria IV. Azotobacter and Beijernickia E. Nitrifying bacteria V. Rhodospirillum

• A. A-IV;   B-V;    C-I;    D -II;   E-III
• B.        A-V;    B-IV;   C-I;    D-III;   E-II
• C.        A-IV;    B-V;    C-II;   D-III;   E-I
• D.        A-IV;    B-III;   C-I;    D-II;    E-V