Don's Gardening Is a Sole Trader Business That Has Been

Don's Gardening is a sole trader business that has been subject to an ATO audit. A number of errors were found as a result of the audit. The errors were caused by a misunderstanding of the tax law and were not caused by fraud or evasion. The ATO proposes to amend the three previous years of assessments of this sole trader business. Which one of the following statements is true?

A) The ATO is not entitled to do this as the power to amend assessments can only allow two years of assessments to be amended if there is no fraud or evasion
B) The ATO is not entitled to do this as amending assessments more than one year in the past is unfair and inconvenient to the taxpayer
C) The ATO is entitled to do this as the power to amend assessments allows the ATO to go back up to four years in the past if there is no fraud or evasion
D) The ATO is entitled to do this as the power to amend assessments allows the ATO an unlimited time period to review past year assessments for whatever reason