QUESTION $1.(25$p$)$

a$.$ If the MARR is $12\%,$ use incremental ROR analysis to select the one economically best alternative given below $($A$,$ B$,$ C or D$).$ In the ROR analysis, use only present value analysis to compare alternatives $($In order to calculate IRR, use present value analysis formulas$).$

$\backslash$table$[[,$A$,$B$,$C$,$D$],[$Initial Cost, $$,-200,000-xY**1000,-270,000-xY**1000,-270,000-xY**1000-350,000,],[$Annual Cash Flow $+50,000,+55,000,+20,000,+70,000,],[$Life$,$ years,$30,30,30,30]]$

X$=2$

Y$=2$