Jennifer has just started a private food services company and is curious about the implications of making accounting changes. Which of the following is true? O a. Management is required to receive written approval from both provincial and federal agencies in order to make any accounting changes O b. Private companies are entitled to make up to one accounting change per year without any disclosure; however public companies must disclose the change no matter what O c. No accounting changes are permitted once policies have been elected; however, a company may, under exceptional circumstances, contact the Accounting Standards Board for permission to make a change O d. Any accounting changes must specifically disclose the effect the change will have on the company's net income