You are weeding your garden when you accidentally expose some ...

[Hungry!]

You are weeding your garden when you accidentally expose some roots of your pea plants. You notice swellings (root nodules) on the roots and there is a reddish tinge to the ones you accidentally damaged. Most likely your peas plants
A) suffer from a mineral deficiency.
B) are infected with a parasite.
C) are benefiting from a mutualistic bacterium.
D) are developing offshoots from the root.
E) contain developing insect pupa.

[mydiamond]

I know it's C,

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