CAB Co.'s Sales Manager, Jeff, walks to the bank on Fridays, to do weekly deposits from cash sales. The company's bookkeeper, Amir, records the week's sales in the company's ledgers, from receipts and cash given to him from Jeff. Jeff normally rings through sales during the week. The company's other employee, Emma, manages inventory. What internal control principle is violated in this situation? a) Segregation of duties. b) Authorize Transactions. c) Insure Assets and Bond Key Employees. d) Use tech controls. e) Maintain records.