To be able to use the Certified Public Accountant title, you need to be regulated by the American Institute of Certified Public Accountants.
The AICPA is therefore very important in the United States and for one to be recognized as a proper accountant, they need to be AICPA approved and regulated.
In conclusion, option A is correct.
Find out more on the AICPA at https://brainly.com/question/5041945.