please just solve the rate of return analysis, I'm confused on that part

Rate of Return Problem

Consider three mutually exclusive alternatives for an investment.

	A	B	C	D
Initial Cost	$100,000	$130,000	$200,000	$330,000
Uniform Annual Benefit	$31,520	$38,780	$47,480	$99,879
Uniform Annual Costs	8% of First Cost
Life	5	5	5	5
Salvage	10% of first cost

Use a Rate of Return Analysis and Excel to solve for the following:

Which alternative should be chosen using an MARR of 6%?

o Using a Mathematical Rate of Return Solution (5 points)

o Using a graphical solution to the problem indicating which alternative should be chosen for interest rates from 0 20%. (5 points). Make sure your graph has all proper labels.

Create a choice table from 0 20%. (5 points)