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What is a blockchain? a . A blockchain is a digital database consisting of records called class. b . More than one of the above

What is a blockchain?

a $.$ A blockchain is a digital database consisting of records called class.

b $.$ More than one of the above

c $.$ A blockchain is a centralized digital ledger consisting of records called blocks.

d $.$ A blockchain is a decentralized, distributed, digital ledger consisting of records called blocks.

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