please show all detailed calculations and steps

AP 4-2 (Individual Tax Payable-Five Cases) Mr. Ethan Rampersaud is 45 years old. The following five independent cases make varyins assumptions for 2023 with respect to Mr. Rampersaud' marital status and number of depen dants. In all cases, Mr. Rampersaud had net income of $70,000, all of which is employmen ncome with the exception of a CPP deduction of \$631 (ITA 60(e.1)). Mr. Rampersaud's employe withheld the required maximum El premiums and CPP contributions. Case A Mr. Rampersaud is married and his wife, Mia, has net income of $8,800. Mia's 73-year-old mother, Bernice, lives with them. Bernice has a mental infirmity that is not severe enough to qualify for the disability tax credit. However, it does make her dependent on Ethan and Mia. Because of a large investment portfolio, Bernice's net income for 2023 is $19,000. Case B Mr. Rampersaud is married and his wife, Mia, has net income of $4,410. They have one child, Martha, who is 10 years of age. Martha had no income during the year. During the year, the family had medical expenses as follows: Case C Mr. Rampersaud is married and his wife, Mia, has net income of $4,500. They have a son, Mohamed, who is 19 years old and lives at home. He attends university on a full-time basis during eight months of the year. Mr. Rampersaud pays $9,000 for Mohamed's tuition. Mohamed had net income of $2,200, all of which is employment income earned during the summer months. He will transfer any unused credits to his father to the maximum extent possible