In a town of 351 adults, every adult owns a car, motorcycle, or both. If 331 adults own cars and 45 adults own motorcycles, how many of the car owners do not own a motorcycle?<spanclass=′latex−bold′>(A)</span>20<spanclass=′latex−bold′>(B)</span>25<spanclass=′latex−bold′>(C)</span>45<spanclass=′latex−bold′>(D)</span>306<spanclass=′latex−bold′>(E)</span>351