Please solve the question, if you are completely sure about it, otherwise I will downvote it.

Thanks.

A six-units detached house development project costs are the following: -Total land cost 30,000,000 Baht (pay the beginning of the project) -House construction cost 2,000,000 Baht per unit (pay one unit at the end of month) - Total SG&A 6,000,000 Baht (pay equally at the end of month 1 - 6)Total project time is six months. Detached house will be sold 1 unit per month starting month 1, which is paid full payment at the end of each month (means get full paid 1 unit at the end of month 1-6). The selling price is 30 percent markup. Weighted average cost of capital of project is 12%. What is he project rate of return? 30% 64.28% 15.86% 42.86%