George exercises 15 minutes a day, every day of the year. How many minutes a year does George exercise? Write and solve an equation to find the answer. A. 365 × 15 = 5 , 475 minutes B. 365 + 15 = 380 minutes C. 365 ÷ 15 = 124 minutes D. 365 × 15 = 4 , 475 minutes