Arrange the following scholars in the chronological order of when they proposed their respective theories regarding the decline of the Indus Valley Civilization (from earliest to latest): 1. Ramaprasad Chanda (Aryan Invasion/Indra hypothesis) 2. Mortimer Wheeler (Fortified cities and Aryan massacre) 3. George F. Dales (Refutation of the mythical massacre at Mohenjo-daro) 4. Shereen Ratnagar (Decline of overseas trade with Mesopotamia)

Options:

• A: 2-1-3-4
• B: 1-3-2-4
• C: 1-2-3-4
• D: 3-1-2-4

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