Which statement is untrue. a. The period of review after a tax return has been assessed, promotes integrity in the tax system, whereby the ATO has some time to investigate taxpayers tax returns that have been simply accepted at face value under the self assessment system b. The ATO legislates GST, administers GST, and collects GST c. The ATO's audit program identifies high risk taxpayers and specially selected groups of taxpayers, audited to detect breaches of