What is the recommended approach to testing contract interactions on the C-Chain before mainnet deployment?

• A. Use testnet endpoints, test AVAX, and development tools to deploy and debug Solidity contracts.
• B. Deploy directly to mainnet after a quick unit test.
• C. Rely on manual testing in production with no dedicated test environment.
• D. Use only a local in-memory simulator without network access.

Answer: (A)

Testing contract interactions on the C-Chain should be done on a dedicated testnet with real-feeling conditions before touching mainnet. Using testnet endpoints, test AVAX for gas, and development tools lets you compile, deploy, and interact with Solidity contracts in an environment that mirrors mainnet behavior without risking real assets. This setup lets you catch issues in deployment, function calls, inter-contract interactions, and gas usage, and you can debug with the same tooling you’d use on mainnet.

Rushing straight to mainnet after a quick unit test is risky because it can miss integration problems, edge cases, and how contracts interact under real network conditions. Relying on manual testing in production is unsafe, unreproducible, and could lead to asset loss or service disruption. A local in-memory simulator without network access cannot reflect actual network state, gas dynamics, or real contract interactions, so it won’t reveal issues that only appear when the chain is live.