explain in deatil step by step calculation

Sai Ltd. is a manufacturing company considering a project with an Investment of Rs.15000. The Project is expected to generate annual revenue of Rs. 9000 . The variable cost will be 60% of sales, and fixed cost for the project will be Rs.1500. Fixed cost includes depreciation of Rs.1000. The duration of the project is 3 years. The tax rate applicable to the company is 30%. The cost of capital is 12%. Explain following in detail with step by step calculation (A) Using the above information, calculate NPV when there is a 10% adverse (pessimistic) change in each of the variables during the recession (investment, sales, and fixed cost excluding depreciation). (B) Calculate NPV using sensitivity analysis if sales change by 20% favorably. (C) If the risk-adjusted discount rate is 15%. Find NPV. (D) If the cash flows of the company are Rs. 3000 each for three years, and considering the risky environment, the certainty of receiving these cash flows () is given as: 1=0.90,2=0.70, and 3=0.65 Calculate NPV