If a person is a member of the general public speculating in the futures market, when would this person be required to submit more cash into the account with the broker? a. when there is a margin call b.at the end of the trading day in accordance with daily settlement c. at the beginning of the next day in accordance with daily settlement d.there will be no such requirement because the trader cannot lose more than the amount initially committed e. at the maturity date of the contract