Taxpayer is a corporation which purchased equipment for its operations for $100,000 on January 2, 20X1. The equipment is depreciated annually, for tax purposes, at $10,000. On January 2, 20X5, Taxpayer sells the equipment to another dealer for $85,000. What is the realized gain or loss for the Taxpayer in 20X5? Select one: a. Realized gain of $15,000. b. $15,000 realized loss. c. Realized loss of $55,000. d. $25,000 realized gain.