During the formation of root nodules, the cells that show dedifferentiation are
Epidermis and outer cortical cells of root
Root hairs and outer cortical cells
Inner cortical cells and pericycle cells present opposite to xylem of root
Endodermal and root hair cells
At the time of root nodule formation the nod factors trigger dedifferentiation of inner cortical and pericycle cells to form nodule primordium.