1991 में भारत में शुरू किए गए आर्थिक सुधारों के तीन मुख्य स्तंभ कौन से थे?

Which of the following was a major reform introduced in India's economy as part of the LPG reforms after 1991?

In 1991, rupee was devalued in two stages and the cumulative devaluation was about __________ percent in USD terms.