the internal audit function is effectively managed when

I. the results of the internal audit functions work achieves the purpose and responsibilities include in the internal audit charter

II. the internal audit function conforms with the definition of internal auditing and the standarts

III. all risks in the organization have been identified

IV. the individual auditors do their work in conformance to the code of ethics and standards

V. the external audit costs are reduced each year

a. III, IV and V

b. II. III, and IV

c. I and V

d. I,II, III, IV and V

e. I, II, and IV