<h1>Rupee breaches 90 to a dollar as central bank support, bank dollar purchases and FII outflows pressure currency.</h1> The rupee breached 90 to a dollar amid importer demand, ongoing FII outflows and banks buying dollars at higher levels, hitting an intra-day low of 90.15 before partial recovery. Market observers noted government and Reserve Bank support had kept the dollar bid to benefit exporters, and cautioned that easing of such support near 90 could push the rupee toward 91. The upcoming Monetary Policy Committee decision and the risk of an RBI rate cut were identified as potential drivers of further currency selling, while a weaker dollar index and lower Brent crude limited steeper decline.