On a map, a 12-centimeter length represents 72 kilometers. How many kilometers does a 17-centimeter length represent?<spanclass=′latex−bold′>(A)</span>6<spanclass=′latex−bold′>(B)</span>102<spanclass=′latex−bold′>(C)</span>204<spanclass=′latex−bold′>(D)</span>864<spanclass=′latex−bold′>(E)</span>1224