The length is 7 and there is no N
Less workers = more hours
OR the answer might be worded as
More workers = less hours
4, 2, 1, 3
we cannot use 2 before having another triangle, so 4 must be before 2
we can use 1, but it will be just a restatement of the given information is not done before 4 and 2
3 is the final goal, which is always the last step
you want things less than or equal to 5
so A and B
