In the currency market, the rupee ended firmer at 90.75/79 to the dollar, compared with Tuesday's close of 90.86/91 amid lack of import payments. But dealers expect pressure on the local unit to continue due to rising international oil prices, which hit a nine-month high on Tuesday. The rupee touched a record low of 91.28 to the dollar in January, pressured by worries about higher payments for oil imports and the country's overall economic health. …