Sensex heads for first fall in five sessions as oil rally falters

India's stock markets fell on Tuesday, poised for their first drop after four sessions of gains, as investors were shaky just ahead of the Union Budget next week, and after a torrid session in Asia following weak oil prices. Asian shares retreated from a seven-week high on Tuesday as the oil price rally that boosted global equity markets reversed amid worries over supply glut. Oil prices and the stock market have moved in lockstep for much of the year as investors look at demand for energy for a