The mean age of Amanda's 4 cousins is 8, and their median age is 5. What is the sum of the ages of Amanda's youngest and oldest cousins?<spanclass=′latex−bold′>(A)</span>13<spanclass=′latex−bold′>(B)</span>16<spanclass=′latex−bold′>(C)</span>19<spanclass=′latex−bold′>(D)</span>22<spanclass=′latex−bold′>(E)</span>25