please make answer neat & clearly typed answer is better

For your ongoing business, the required investments are $420,000 for X1, $550,000 for X2, $720,000 for X3, and $800,000 for X4. XO denotes the do-nothing alternative. Moreover, you had information about the internal rates of return for the incremental projects: IRR for X1-XO is 18%, IRR for X2-XO is 20%, IRR for X3-XO is 25%, IRR for X4-XO is 30%, IRR for X2-X1 is 10%, IRR for X3-X1 is 21%, IRR for X4-X1 is 19%, IRR for 3- X2 is 18%, IRR for X4-X3 is 14%, IRR for X4-X2 is 23%. Using the information above, if the MARR is 15%, what system should be selected? a) XO O) 2 c) X3 d) None of the answers are correct e) X1 f) X4