The correct option is D None of these
When a transaction recorded in the cash book and not posted to the corresponding account, this is known as error of posting. This will affect the trial balance as one account balance will be missing from the trial balance. This will affect the profit because the transaction has been omitted to be posted in sales account, the sales account balance will be affected which in turn will affect the gross profit in the trading account. Gross profit thereby affects the net profit of the year.