What is the C-Chain gas model?

• A. The C-Chain uses a fixed gas price irrespective of contract execution.
• B. The C-Chain uses a gas mechanism similar to Ethereum with gas price and gas limit to regulate contract execution.
• C. Gas is not used on the C-Chain.
• D. Gas on the C-Chain is tied to stake.

Answer: (B)

Gas on the C-Chain follows an Ethereum-like mindset: every contract operation costs gas, and you must specify a gas limit (maximum you’re willing to spend) and a gas price (how much you’re willing to pay per unit of gas). The transaction consumes gas as it executes, and the total fee is the amount of gas actually used times the gas price. If execution hits the limit, it stops and the transaction can fail, with the gas spent up to that point paid to the validators. This mechanism keeps contract execution from consuming unlimited resources and lets users prioritize their transactions by offering a higher gas price.

This approach isn’t about a fixed price or about staking determining fees. A fixed gas price would remove the market-like mechanism that balances supply and demand, and gas isn’t tied to stake—fees come from usage, not how much you’ve staked. Conversely, gas is essential on the C-Chain, and it’s not avoided or eliminated by staking.