Concept:An error of commission is made when a transaction is posted to the wrong account, but the correct account type is used.Explanation:The credit purchase of N200 from Osae was wrongly posted to Osei's account.Both Osae and Osei are personal accounts of suppliers.Because the error only involves the wrong person's account and not the wrong class of account, it is not an error of principle, omission, or original entry.This clearly matches the definition of an error of commission.Answer:B. commission