ABC Company Ltd purchased 5000 cocoa futures contract at a price of $150 per contract. As part of the contract, ABC was required to deposit $10 per contract initially in their account with the maintenance margin set at $5 per contract. If the price per contract falls to $142 overnight, what action will the exchange require ABC to undertake?

ABC Company Ltd purchased 5000 cocoa futures contract at a price of $150
per contract. As part of the contract, ABC was required to deposit $10 per
contract initially in their account with the maintenance margin set at $5 per
contract. If the price per contract falls to $142 overnight, what action will the
exchange require ABC to undertake?