What could pizza express do to avoid cash theft in the

Question

Following is a bank reconciliation for Pizza Express for May 31, 2013:

Because of limited funds, Pizza Express employed only one accountant who was responsible for receiving cash, recording receipts and disbursements, preparing deposits, and preparing the bank reconciliation. The accountant left the company on June 8, 2013, after preparing the May 31 bank reconciliation. His replacement compared the checks returned with the bank statement to the cash disbursements journal and found the total of outstanding checks to be $4,600.

Required: 

a. Prepare corrected bank reconciliation. 

b. What is the total amount of cash missing, and how was the difference between the true cash per the bank and the true cash per the books hidden on the reconciliation prepared by the former employee? 

c. What could Pizza Express do to avoid cash theft in the future?