An Unknown Compound Has the Formula of C₉H₁₂ $\delta$ 122
Septet At Has

An unknown compound has the formula of C₉H₁₂. The following ¹H NMR peaks were observed: Doublet at $\delta$ 1.22
Septet at $\delta$ 2.83
Multiplet at $\delta$ 7.09
From the data above, pick the compound below that fits the spectra data.

A) I
B) II
C) III
D) IV