Question: Which statement regarding Proof of Stake ( PoS ) is correct? Question 1 5 options: PoS is a mechanism as same as Proof of Work.

Which statement regarding Proof of Stake (PoS) is correct?
Question 15 options:
PoS is a mechanism as same as Proof of Work.
PoS increases the power and energy consumptions for mining the blocks.
A validator in a PoS network must successfully mine a block with a qualified hash output.
A validator in a PoS network must own a qualified amount of cryptocurrency of the network.

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