The similarities between futures trading and futures option trading are as follows: ① the trading object is standardized contract; (two) all transactions in the futures exchange through open bidding; (3) After the transaction is concluded, it must be settled through the clearing house. However, the subject matter of a futures contract is different from that of a futures option contract. The subject matter of a futures contract is a certain quantity and quality of assets or commodities, and the subject matter of a futures option contract is a futures contract. The delivery standard is naturally different with different contract objects. In addition, the market risks of futures trading and futures option trading are also different: the potential profits and losses of both parties to futures trading are infinite, while futures option trading is essentially an option trading, and the buyer's losses are limited, and the profits may be infinite, while the seller's profits are limited and the losses may be infinite. Therefore, choose a.