Among the following pairs of microbes,which p | vedclass

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(C) Biofertilizers are organisms that enrich the nutrient quality of the soil. $Rhizobium$ is a symbiotic nitrogen-fixing bacterium that forms nodules

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Cyanobacteria and Rhizobium

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(C) Biofertilizers are organisms that enrich the nutrient quality of the soil. $Rhizobium$ is a symbiotic nitrogen-fixing bacterium that forms nodules in the roots of leguminous plants. Cyanobacteria (such as $Anabaena$ and $Nostoc$) are autotrophic microbes that fix atmospheric nitrogen in paddy fields and other environments. Both $Rhizobium$ and Cyanobacteria are widely used as biofertilizers in agriculture to enhance crop yield. $Aspergillus$ and $Rhizopus$ are fungi that are generally not used as biofertilizers; $Aspergillus$ is often used in industrial production of enzymes or organic acids,and $Rhizopus$ is a common bread mold.

Among the following pairs of microbes,which pair has both the microbes that can be used as biofertilizers?

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