What can you do in the extension ledgers configuration? Please choose the correct answer.

What can you do in the extension ledgers configuration? Please choose the correct answer.
A . You can create an extension ledger for which the underlying ledger is an extension ledger.
B . You can assign a freely defined currency to an extension ledger.
C . You can manually create a new ledger group that contains an extension ledger.
D . You can link an accounting principle to a ledger group that contains an extension ledger.

Answer: D