Question 13 Q: 13 Consensus is reached: Options A: by the miner nodes which make sure that a transaction is valid. B: by every single node in the blockchain network executing the same transaction. C: by a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible. Save Question Show Answer Discussion 0 Clear Discussion Most voted Newest No comments yet. Be the first to comment. Post Be respectful. No spam. Correct Answer: B