Which option contains only true statements about biofertilizers?

(i) Biofertilizers are organisms that enrich the nutrient quality of the soil.

(ii) The main sources of biofertilizers are bacteria, fungi and cyanobacteria.

(iii) Symbiotic leguminous nitrogen fixating bacteria is Rhizobium.

(iv) Free-living nitrogen fixating bacteria living in the root are Azospirillum and Azotobacter.

(v) Many members of the genus Glomus bacteria form mycorrhiza.

(vi) The fungal symbiont in mycorrhizal associations absorbs phosphorus from soil and passes it to the plant.