hard20 pts · first answer countssecuritygasdesign-patterns

Paying everyone in a loop

A contract pays rewards by looping over an array of all users and sending ETH to each in one transaction. As users grow, what breaks and what is the better design?

A.Nothing breaks, because the EVM has no gas limitB.Only the first user is paidC.The loop eventually exceeds the block gas limit, and one reverting receiver can block everyone; use a pull pattern where each user claims their own rewardD.Loops are not allowed in Solidity

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