This table shows the heights and weights of five 13-year-old patients at the doctor's office last week. The linear equation y = 5x - 215 best models this data set. What does the slope represent?

A. For every 1-pound increase in the patient's weight, the height increased by 5 inches.

B. A 5-foot-tall patient would weigh about 105 pounds.

C. The difference in weight between the shortest patient and the tallest patient was 5 pounds.

D. For every 1-inch increase in the patient's height, the weight increased by 5 pounds.