Arrange the following events relating to India's ethanol blending programme in the correct chronological order:
- The BS6 Phase 2 Real Driving Emissions mandate comes into effect, making new vehicles factory-engineered for E20 compatibility
- India crosses the 20% ethanol blending mark, meeting a target that had been advanced from its original 2030 deadline
- The government informs the Lok Sabha that ethanol blending has saved approximately Rs 1.98 lakh crore in foreign exchange