H₃C-CH₂-CH₂-CH-CH₂-CH-CH₂-CH₃
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F F

what is the name of the above compound?
A. 3,5-difluorooctane 1-ethyl
B. 1,3-difluorohexane
C. 4,6-difluorooctane
D. 1,3-difluoro-1-ethylhexane