The product of two positive numbers is 9. The reciprocal of one of these numbers is 4 times the reciprocal of the other number. What is the sum of the two numbers?<spanclass=′latex−bold′>(A)</span>310<spanclass=′latex−bold′>(B)</span>320<spanclass=′latex−bold′>(C)</span>7<spanclass=′latex−bold′>(D)</span>215<spanclass=′latex−bold′>(E)</span>8