canadian tax law question

Question 3 For the three taxation years ended December 31, 2018, 2019 and 2020, assume that Sherman Sage had the following net tax owing. Net tax owing 2018 3,068 2019 4,668 2020 Estimated) 4,324 Required: Explain why instalments are required for the 2020 taxation year Calculate the amount of the instalments that would be required under each of the three acceptable methods. Alternative 1 (quarterly instalment): Alternative 2 (quarterly instalment): Alternative 3 (first two instalments) Alternative 3 (second two instalments) Alternative chosen Indicate the dates on which the payments will be due