Which of the following errors would have caused a difference in the trial balance? a) Not recording in the Cash Account 15,000 paid for purchasing goods for sale b) Posting to Motor vehie account 600 paid for servicing vehicles c) Recording a sale of 30,000 as 3,000 in the Cash Book d) Posting a payment of 21,000 for stationery as 12,000 to the Stationery account