Mr. Mathew Petrus received a monthly salary of N \( \$ 30,000 \) during tax assessment year 2018/2019 and died on 15 November 2018. At time of death, a pension fund approved by the Minister had accrued to Mr. Mathew Petrus N\$500,000 payable to the deceased's beneficiary. The beneficiary is entitled to N \( 4,583.33 \) every month with effect from December 2018. This monthly payment will be for 5 years. Required: Supporting your steps with explanatory notes, calculate: a. The tax amount to be deducted from the deceased's estate as tax liability (in respect of tax year 2018/2019). b. Mr. Mathew Petrus s tax liability for \( 2018 / 2019 \)