Match the architectural innovation (List I) with the Sultanate monument where it was first prominently used in India (List II):
List I
A. First use of True Arch
B. First use of True Dome and Horseshoe Arch
C. First use of Sloping (Batter) Walls
List II
1. Tomb of Ghiyasuddin Tughlaq
2. Tomb of Balban
3. Alai Darwaza

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Accepted Answer

The Tomb of Balban (built c. 1287) in Mehrauli is the first building in India to use a true scientific arch. The Alai Darwaza (built by Alauddin Khalji in 1311) features the first true dome and horseshoe arch. The Tomb of Ghiyasuddin Tughlaq introduced the sloping 'batter' walls characteristic of Tughlaq architecture.

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