Answer:
c. An addition to (or a deduction from) the beginning balance of retained earnings
Explanation:
A prior period adjustment is the correction of an accounting error that occurred in the past and was reported on a prior year's financial statement, net of income taxes. Prior period adjustment are reported in the statement of retained earnings as an increase or a decrease in the beginning retained earnings. Therefore, the adjusted beginning retained earnings balance is the amount that retained earnings would have been if the error had not been made.
