Which of the following is correct with respect to accounting ethics?

Which of the following is correct with respect to accounting ethics?
A) The U.S. CPA Code of Ethics does not address the conflict of interest problem.
B) It is difficult for one person to make a difference; rather, what is required is organization-wide action to ensure ethical accounting behaviour.
C) The ultimate purpose of strong ethical standards in accounting is to maintain public confidence in business institutions and financial markets.
D) To date, there has been no legislation passed in either the United States or Canada which is designed to ensure that the general public has confidence in the work of accountants.
E) All of these are correct.