The correct option is D All of the above
The tactile corpuscles of Meissner or tactile receptors are grouped on the skin of the fingertips, lips, and orifices of the body ( nostrils, eyes, mouth, ear canals, anus, urethra, vagina, penis) and the nipples. They are only stimulated when touched. The Meissner's corpuscles tell the brain about the shape and feel of an object in the hand or the touch. They adjust constantly to the environment.