The ¹H NMR Spectrum of a Compound with Formula C₇H₁₄O

The ¹H NMR spectrum of a compound with formula C₇H₁₄O gives a doublet at 9.2 ppm.Which of these structures is a possible one for this compound?

A) 2-Methyl-3-hexanone
B) 2-Methylhexanal
C) 2,2 -Dimethylpentanal
D) 2,2-Dimethyl-3-pentanone
E) Two of the above