Which of the Following Is True

Which of the following is true?

A) Generally Accepted Accounting Principles (GAAP) form the backbone of managerial accounting conventions, and local and/or regional standards and professional judgment allow for variations among practitioners.
B) Each province in Canada has its own code of ethics and rules and guidelines of professional conduct.
C) The Sarbanes-Oxley Act in the U.S.and similar legislation in Canada aims to guide ethical standards used in management accounting practices.
D) Chartered Professional Accountants of Canada plays an important role in promoting high standards of ethics in the accounting profession, excluding managerial accounting.