So to solve this first you need to convert all the answers to decimals.
Site B 17/9 = 1.89 when you round up
Site D 4/3 = .75
Then look at all the numbers least to greatest.
D .75 m C 1.36 m A 1.60 m B 1.89 m
Answer D, C, A, B
The answer to this question is:
104.142857 or simply 104.14 (simplified).
I think it is x² - 10x + 21 = 0.
The error is the proportions are set wrong