After the transaction that contains the delState("A") function is committed, what happens to the ledger and state database?

After the transaction that contains the delState("A") function is committed, what happens to the ledger and state database?
A . getstate("A") function returns the current state of the key "A".
B . The deleting transaction sets an empty value to the key "A" in the write set.
C . The state of the key "A" is removed from the state database, but its history remains in the ledger.
D . All transaction histories which updated the state "A" are deleted from the ledger.

View Answer

Answer: C

Explanation:

In Hyperledger Fabric, when a transaction that includes the delState("A") function is committed, it results in the removal of the state of the key "A" from the current state database. However, the history of all transactions that have affected the key "A" remains intact in the ledger. This operation ensures that while the current state reflects the deletion, the immutability and traceability of the ledger are preserved, allowing for auditability and verification of past states. Options such as setting an empty value to the key or altering the transaction history are not supported, as they would violate the principles of immutability and transparency central to blockchain technology. Therefore, the correct outcome of a delState("A") operation is that the current state of "A" is deleted, but its transaction history remains accessible in the ledger.