Item A, the lack of liquidity of forward contracts limits the authority of their prices and the role of risk diversification;

In item B, various behaviors that are not conducive to the performance of forward transactions may occur before delivery, so the credit risk is high;

In item C, forward trading is reached through one-on-one negotiation between the two parties, while futures trading is a standardized futures contract, which is realized through centralized bidding in the exchange.