From the point of view of your immune system, what is the most likely consequence of picking your nose?

AIt can cause damage to the lining of your nose, which your immune system will then have to repair.

BIt removes the helper T cells stored in your nasal mucus, making your body less likely to produce a nonspecific immune response to pathogens.

CIt pushes any pathogens on your finger up into your nose and removes mucus that was there to trap them.

DIt can leave dirt inside your nose, which your immune system must remove by creating specific antibodies.