Required: Answer the following questions in accordance with international auditing standards. "Al-Otaibi Office - Chartered Accountants and Auditors" is one of the auditing offices authorized to practice the profession in the Kingdom of Saudi Arabia. This office provides auditing, zakat, bookkeeping and advisory services. First: Al-Otaibis office was assigned the task of reviewing the financial statements of a joint-stock company for the year ending on December 31, 2021. Al-Otaibis office carried out the steps of the audit process with the aim of reaching an opinion on the fairness of the companys financial statements. Al-Otaibis office implemented a number of procedures aimed at collecting Sufficient audit evidence within the audit program, the most important of which are: 1. Examination of a sample of the equipment to ensure that a recent purchase of the equipment has been recorded and is in operation. 2. Review the total calculation of repair and maintenance expenses each month and compare them to each other to determine if there are inconsistent or unusual relationships. 3. Comparing the suppliers' names and amounts related to them in the purchase invoices with the data recorded in the purchases journal. 4. Make a sudden inventory of the petty cash item to verify the validity of the amounts received in the petty cash fund. 5. Obtaining an account statement from the customer's bank, showing the customer's account balance at the end of the year. 6. Monitoring the client's employees who carry out the inventory count to determine whether the procedures established by the company for the inventory count are properly applied. 7. Track postings from the sales journal to general ledger accounts. 8. Calculating the ratio of cost of goods sold to gross sales as a test of the reasonableness of the total gross margin compared to the previous year. 9. Obtaining information about the client's compliance with the established internal controls by asking a series of questions to the client's employees. 10. Track totals in a cash disbursement journal with general ledger. And what is required: In the light of the previous information and in accordance with international auditing standards, select the appropriate evidence collection method that Al-Otaibi's office can use for each of the ten procedures mentioned in the first item.