The correct answer is A. Red-white longitudinal bands and v-shaped distal nicks.
Darier’s disease presents with hyperkeratotic papules in seborrheic areas, acrokeratosis verruciformis of Hopf, palmar keratosis and pits, and nail findings including red-white longitudinal bands and v-shaped distal nicks.
Oil spots and onycholysis may occur in psoriasis. Clubbing may occur in a variety of conditions such as hypertrophic pulmonary osteoarthropathy. Dolichonychia are long nails that may occur in Ehlers-Danlos and Marfan’s syndrome. Trachyonychia are rough nails that may occur in lichen planus.
Reference: Cohen PR. Longitudinal erythronychia: individual or multiple linear red bands of the nail plate: a review of clinical features and associated conditions. Am J Clin Dermatol. 2011;12(4):217-31.