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.

The answer would be b.

The answer is fast food restaurants use technology designed to reduce the need for skilled labor. 

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Answer continue to produce a quantity such that marginal revenue equals marginal cost;