Which of the Following Is/are Included in the Specific Steps

Which of the following is/are included in the specific steps for auditing short-term investments?

A) Ensure that policies and procedures for short-term trading activities exist, are periodically reviewed for changes, and are properly approved
B) Review to ensure that trading policies include allowed and restricted trading instruments, approved traders
C) Review the short-term trading activity to ensure compliance with trading policies and procedures and applicable regulatory environment
D) All of the above