Long-term investment decision, payback method Personal Finance Problem Bill Williams has the opportunity toinvest in project A that costs $9,600 today and promises to pay $2,300, $2,400, $2,400, $2,100 and $1,900 over thenext 5 years. Or, Bill can invest $9,600 in project B that promises to pay $1,600, $1,600, $1,600, $3,500 and $4,000over the next 5 years. (Hint: For mixed stream cash inflows, calculate cumulative cash inflows on a year-to-year basisuntil the initial investment is recovered.)a. How long will it take for Bill to recoup his initial investment in project A?b. How long will it take for Bill to recoup his initial investment in project B?