Read the passage about Tornado Alley. Tornado Alley The Midwestern United States is home to "Tornado Alley," a portion of Texas, Oklahoma, Kansas, and Nebraska commonly plagued with powerful and plentiful tornadoes. Tornado Alley is located at a point where the jet stream drives cool, dry, high-pressure air masses from the deserts and mountains of the West toward the East Coast. With which type of air mass do these high-pressure fronts collide to create so many tornadoes? A. moist, cool, low-pressure air masses from Canada B. moist, warm, low-pressure air masses from the Gulf of Mexico C. dry, cool, high-pressure air masses from Alaska D. dry, warm, high-pressure air masses from the Atlantic Ocean