how can we know which one is the correct answer ?

19. Use the table below and find Risk Event 6 based on the following information: Marty is 60 percent certain that he can get the facility needed for $45,000, which is $7,000 less than what was planned for. Risk Event Ex$V 1 2 3 Probability 20 .50 .45 .22 .35 Impact Cost/Benefit -4,000 5,000 -300 500 -4,500 4 5 A..60, $45,000, $27,000 B..60, $52,000, $31,200 C..60, $7,000, $4,200 D..60,-$7,000.-$4,200