Answer:
d.when an incorrect journal entry has been made, but not yet posted and when a proper entry has been made but posted to the wrong account or for the wrong amount
Step-by-step explanation:
When correcting errors in a trial balance, the ruling method should be used "when an incorrect journal entry has been made, but not yet posted and when a proper entry has been made but posted to the wrong account or for the wrong amount."
In trial balancing, an error can be fixed or corrected by tracing the trial balance steps. First, make a comparison between the ledger balances and the amount posted to the trial balance then add both debit and credit table if the amount matches, otherwise use the transposition method.