India's consumer inflation likely accelerated in September, moving closer to the upper end of the Reserve Bank of India's 2%-6% target range as higher energy costs compounded pressure from elevated food prices, a Reuters poll of economists showed. Rising crude oil prices and higher food costs are expected to have pushed inflation higher last month. Brent crude has climbed above $100 a barrel, while a deficient monsoon has driven up food prices. Food and beverages account for about 40% of India's consumer price index basket.