<prompt> Acanthosis nigricans can occurs due to ?Increased multiplication of basal cellsComification of basal cellsKeratinisation of epidermal cellsAll  <response>: Ans. is c i.e., Keratinization of epidermal cellsHistological features of Acanthosis nigricanso Hyperplasia of stratum spinosum of the epidermis.o Hyperkeratosis --- Thickening of Stratum corneum of epidermis Cornification of epidermis.Slight basal cell hyperpigmentation 