A.
[tex]\frac{9}{5\cdot8}=\frac{9}{40}\ne\frac{40}{9}[/tex]This is not a correct choice
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B.
[tex]\frac{8}{9}\times5=\frac{40}{9}[/tex]This is a correct choice
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C.
[tex]\frac{5}{8\times9}=\frac{5}{72}\ne\frac{40}{9}[/tex]This is not a correct choice
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D.
[tex]5\times\frac{1}{9}\times8=\frac{40}{9}[/tex]This is a correct choice
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E.
[tex]\frac{5\times8}{9}=\frac{40}{9}[/tex]This is a correct choice