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Deployment fails on one chain

A contract compiled with a recent Solidity version deploys fine on Ethereum but fails with an invalid opcode on an older EVM chain. What is the most likely cause?

A.The compiler's default EVM version emits newer opcodes like PUSH0 or MCOPY that the chain does not support; set evm_version to what the chain supportsB.The contract is too smallC.The chain does not support eventsD.The deployer has the wrong nonce

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Deployment fails on one chain

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