Three towns are arranged in the shape of a triangle. The distance from Stockton to Overly is 10 miles and the distance from Overly to Shea is 8 miles. Maria drives from Stockton to Overly to Shea and back to Stockton. Which of the following statements best describes her trip? Select the best answer from the choices provided. A. She drove 20 miles.
B. She drove more than 20 miles.
C. She drove less than 20 miles.
D. She drove at least 20 miles.