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Function selector

When a transaction calls transfer(address,uint256) on a contract, how does the EVM know which function to run?

A.The function name is sent as a plain text stringB.The contract tries each function until one does not revertC.Functions are numbered in the order they appear in the sourceD.The first 4 bytes of calldata are the selector: the first 4 bytes of keccak256("transfer(address,uint256)")

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Function selector

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