In _______, other nodes verify the validity of the block by checking that the hash of the data of the block is less than a preset number.

In _______, other nodes verify the validity of the block by checking t

1.	In _______, other nodes verify the validity of the block by checking that the hash of the data of the block is less than a preset number.
A.	Proof of Burn
B.	Proof of STAKE
C.	Proof of Work
D.	All of the options
Answer» D. All of the options