The correct option is B Sebaceous glands
Meibomian glands are modified sebaceous (oil) glands. They are found in eyelids. Secretory duct of this gland open in the corner of eye. Oily secretion of this gland makes oily layer on the layer of tears on the conjunctiva of eye, so tears do not fall. Tears are essential for the protection of living cells of conjunctiva.