please explain

You have a model with two decision variables XA = dollars invested in project A and XB= dollars invested in project B Select all constraints below that forces the ratio of XA to XB (XA / XB) to be greater than or equal to 5. The constraint(s) selected should be in linear form and can be part of a model solved with the Simplex solver. (Select all correct answers.) 0 5* XB - XA =5 O XB - 5*XA = 0 O XA / XB >=5 O XA - 5*XB >= 0