An IS auditor has completed an audit of an organization`s accounts payable system. Which of the following should be rated as the HIGHEST risk in the audit report and requires immediate remediation? 

Answer options:

A. Lack of segregation of duty controls for reconciliation of payment transactions
B. Lack of segregation of duty controls for removal of vendor records
C. Lack of segregation of duty controls for updating the vendor master file
D. Lack of segregation of duty controls for reversing payment transactions

A