A company is planning to invest ₹600 lakhs in a new product line. The expected annual cash flows from the product line for the next five years are as follows:

Year	Cash Flow (₹ in lakhs)
1	150
2	160
3	170
4	180
5	190

The cost of capital is 13%, and the equipment will depreciate at 20% on a Written Down Value basis. The salvage value at the end of five years is ₹40 lakhs.

Required:

1. Calculate the NPV of the product line.
2. Determine the IRR.
3. Compute the Discounted Payback Period.
4. Analyze the impact of a 5% increase in annual cash flows on the project's financial metrics.
5. Evaluate the sensitivity of the NPV to changes in the discount rate (±2%).