The Auditing Standards Board (ASB) develops and issues standards in the form of Statements on Auditing Standards, Statements on Standards for Attestation Engagements, and Statements on Quality Control Standards. The ASB utilizes a process that includes deliberation in meetings open to the public, public exposure of proposed statements, and a formal vote. The Accounting and Review Services Committee (ARSC) also develops and issues Statements on Standards for Attestation Engagements through the same process. Exposure drafts of these statements are issued by the AICPA to invite public comment before a final pronouncement is issued. The public exposure time varies depending on the complexity of the issue and the circumstances surrounding the need for a new standard. A public file containing drafts of proposed pronouncements, comment letters received during public exposure periods, and summaries of research data are retained for 10 years for public reference.