Mumbai, Dec. 16 -- India's wholesale inflation, as measured by the Wholesale Price Index (WPI), remained in negative territory but edged up from -1.21% in October to -0.32% in November, according to data released by the Union ministry of commerce and industry on Monday. The negative rate of inflation has primarily been driven by lower prices of food articles, mineral oils, crude petroleum, manufacture of basic metals and electricity. On a month-on-month basis, the WPI rose 0.71% in November compared to October, marking the strongest sequential increase in 13 months after two consecutive months of decline. "The extent of deflation narrowed compared to the previous month due to a seasonal increase in prices of select food items. While food pr...