23) Bill has been adding funds to his investment account each year for the past 3 years. He started with 23) an initial investment of $1,000. After earning a 10% return the first year, he added S3000 to his portfolio. In this year his investments I earned a 2% return. Last year, discouraged by the recent results, he only added S500 to his portfolio, but in this final year his investments earned 8%, what was Bill's Internal rate of return for the whole investment process? ost 5%. Undeterred, Bill added $2.000 the next year and use cash flow function and irr function) B) 3.5% C) 25% D)3% A) 3.75%