THE rupee appreciated 21 paise to 93.77 against the US dollar on Monday, boosted by easing crude oil prices, stronger foreign fund inflows, and optimism regarding deescalation in West Asia. Forex traders said continued foreign inflows, stable crude, and a mild dollar offer tailwinds for the rupee. However, gains were capped by renewed greenback demand, geopolitical risks, and a rebound in energy prices. In the interbank foreign exchange market, the rupee opened at around 93.85 against the greenback and witnessed an intraday high of 93.69 and a low of 94.11. At the end of the session, the rupee was quoted at 93.77, higher by 21 paise from its previous close. On Friday, the rupee surged 43 paise to close at 93.98 against the US dollar.