Which of the following statement is false? A. A distributed ledger contains many copies of the same ledger.
B. A distributed ledger stores the same set of transaction records.
C. Because a distributed ledger exists in a blockchain network, a computer consisting of all transaction records may crash and cause the syncing issue in the blockchain network.
D. A transaction record cannot be added to the blockchain unless there is network consensus.

Martha is one producer in the perfectly competitive jelly industry. last year, martha and all of her competitors found themselves earning economic profits. if there is free entry and exit, what do you expect to happen to the number of suppliers in the industry and the price of jelly? the number of suppliers will increase, and the price of jelly will fall. the number of suppliers will decrease, and the price of jelly will increase. the number of suppliers will increase, and the price of jelly will increase. the number of suppliers will decrease, and the price of jelly will fall.