Two candles of the same height are lighted at the same time. The first is consumed in 4 hours and the second in 3 hours. Assuming that each candle burns at a constant rate, in how many hours after being lighted was the first candle twice the height of the second?
<spanclass=′latex−bold′>(A)</span>43<spanclass=′latex−bold′>(B)</span>121<spanclass=′latex−bold′>(C)</span>2<spanclass=′latex−bold′>(D)</span>252<spanclass=′latex−bold′>(E)</span>221