Microbes involved in biological fixation of nitrogen are: A. Nitrosomonas B. Azotobacter C. Pseudomonas D. Anabaena E. Rhizobium Choose the correct answer from the options given below:
1
A, B, C, E only
2
B, D, E only
3
A, B, C, D, E only
4
A, B, D only