The new series of Wholesale Price Index (WPI) released by the Government of India is with reference to the base prices of

This question refers to a historical change in the measurement of inflation in India. The Government of India periodically updates the base year of the Wholesale Price Index to reflect changes in the structure of the economy and consumption patterns.

Option C is correct because in the year 2000, the Ministry of Commerce and Industry revised the WPI series by shifting the base year from 1981-82 to 1993-94. This specific revision expanded the number of commodities and updated their weightage to provide a more accurate representation of wholesale price movements during that period.

Note: While 1993-94 was the base year at the time this specific question was framed for the UPSC exam, it has been updated multiple times since then. It was later moved to 2004-05, and the current base year for the WPI series is 2011-12.