Answer (Choose 1 answer)
Which of the following statements is true?
A. All of the others
B. In blockchains, any change or new transactions can be realized only by adding a new block of information to the historical transaction records.
C. In blockchains, one doesn't erase or override the past records, it adds transactions in a chronological
order to a growing list.
D. Unlike the ledgers maintained by banks. Bitcoin's blockchain is replicated on networked machines around the world; hence it is called a "Distributed Ledger".
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