The expected average rate of return for a proposed investment of $648,000 in a fixed asset, with a useful life of 4 years, straight-line depreciation, no residual value, and an expected total net income of $341,000 for the 4 years, is (round to two decimal points) Oa. $2.62% b. 26.31% Oc. 13.90% Od. 13.16%