The expected average rate of return for a proposed investment of $5,820,000 in a fixed asset, using straight-line depreciation, a useful life of 20 years, no residual value, and an expected total income of $11,640,000 over the 20 years, is (round to two decimal places)

a.10.00%

b.20.00%

c.40.00%

d.1.00%