7 (7) Under s.166 ITAA36, provides that from the returns and any other information in the Commissioner's possession and any other sources, he must make an assessment of: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a the amount of taxable income of any taxpayer b the amount of tax payable by a taxpayer C the total amount of tax offset refunds a taxpayer is entitled to d All of the above e None of the above