Mumbai, Dec. 15 -- The Indian rupee slumped sharply on Monday to hit fresh lifetime low levels amid uncertainty over an India-US trade deal and persistent foreign fund outflows. INR crashed to its lowest-ever level of 90.80 before settling at a fresh all-time low of 90.74 (provisional) against the US dollar, registering a loss of 25 paise over its previous close. Besides, prevailing risk-averse market sentiment, compounded by strong US dollar demand from importers, further dented investor sentiment. Indian shares recovered from an early slide to end on a flat note Monday ahead of the release of delayed U.S. jobs and inflation data as well as a slew of central bank decisions due this week. The benchmark S&P/BSE Sensex ended down by 54.30 p...