can someone help with this accounting problem

choice a and b are off the screen

Machinery has an estimated useful life of 10 years. The IRR is 14% and the payback period is 4.7 years. What will happen to the IRR and payback period if the expected salvage value of the machine at the end of 10 years increases? A) B c) Internal Rate of Return Increase No effect Decrease Increase No effect Payback Period Decrease Decrease Increase No effect No effect E) Multiple Choice Choice D D Choice Choice E