The population of Nosuch Junction at one time was a perfect square. Later, with an increase of 100, the population was one more than a perfect square. Now, with an additional increase of 100, the population is again a perfect square.
The original population is a multiple of:
<spanclass=′latex−bold′>(A)</span>3<spanclass=′latex−bold′>(B)</span>7<spanclass=′latex−bold′>(C)</span>9<spanclass=′latex−bold′>(D)</span>11<spanclass=′latex−bold′>(E)</span>17