Costly vegetables, particularly potato and onion, pushed the November wholesale inflation to a 14-month high of 7.52 per cent, making it difficult for the Reserve Bank to ease key policy rate. According to the Wholesale Price Index (WPI) inflation data released today, vegetable prices shot up by 95.25 per cent in November as compared to 78.38 per cent in the previous month. The overall inflation in the food segment comprising wheat, pulses, vegetables, milk, among others, was at 19.93 per cent, up from 18.19 per cent in October.The rise in WPI comes after the retail or consumer price inflation jumped to 11.24 per cent. The inflation was at 7 per cent in October and 7.05 per cent in the earlier month.