Which TWO of these would be most likely to improve the overall control system?

N, a large company in the food production industry, has grown over the years by the acquisition of several smaller rivals. The company has ten branches located in its home country and has just opened a foreign branch for the first time. It has recently made some changes to the structure and implementation of its control system.

Which TWO of these would be most likely to improve the overall control system?
A . Establishing an Internal Audit department.
B . Purchase invoices are now approved for payment at branches and a list of approved invoices are sent to head office for payment. The invoices, supporting documentation and suppliers’ statements are retained at the branches.
C . Excess funds are now invested, by the Finance Director, in short-term securities. The Finance Director initiates buy and sell transactions and she also receives and retains all correspondence relating to the investments.
D . A policy has been initiated to complete a physical inventory of all non-current assets at least annually. This is then reconciled with the non-current asset register.
E . N has just opened a bank account in the currency in which the newly opened branch is now operating.

Answer: A,D