Explain why if a runner completes a 6.2-mi race in 38 min, then he must have been running at exactly 9 mi/hr at least twice in the race. Assume the runner's speed at the finish line is zero. K Select the correct choice and fill in the answer boxes to complete your choice. (Round to one decimal place as needed.) O A. The average speed is mi/hr. By MVT, the speed was exactly mi/hr at least once. By the intermediate value theorem, all speeds between |and mithr were reached. Because the initial and final speed was mi/hr, the speed of 9mi/hr was reached at least twice in the race. O B. The average speed is mithr. By MVT, the speed was exactly | mi/hr at least twice. By the intermediate value theorem, the speed between |and |mithr was constant. Therefore, the speed of 9mi/hr was reached at least twice in the race. O C. The average speed is mithr. By the intermediate value theorem, the speed was exactly |mi/hr at least twice. By MVT, all speeds between |]and |mithr were reached. Because the initial and final speed was I mi/hr, the speed of 9mi/hr was reached at least twice in the race. Explain why if a runner completes a 6.2-mi race in 36 min, then he must have been running at exactly 10 mi/hr at least twice in the race. Assume the runner's speed at the finish line is zero. Select the correct choice and fill in the answer boxes to complete your choice. (Round to one decimal place as needed.) O A. The average speed is mi/hir. By the Intermediate value theorem, the speed was exactly "mi/hr at least twice. By MVT, all speeds between |and mi/hr were reached. Because the initial and final speed was mi/hr, the speed of 10mi/hr was reached at least twice in the race. O B. The average speed is mi/hr. By MVT, the speed was exactly mi/hr at least once. By the intermediate value theorem, all speeds between |]and mi/hr were reached. Because the initial and final speed was mi/hr, the speed of 10mi/hr was reached at least twice in the race. O C. The average speed is mi/hr. By MVT, the speed was exactly | mithr at least twice. By the intermediate value theorem, the speed between | and mi/hr was constant. Therefore, the speed of 10mithr was reached at least twice in the race