Which of the following is the best prediction of the chemical shifts for the signals in the 1H NMR spectrum for the following compound? 
A) I=0.9 ppm, II=2.7 ppm, III=1.2 ppm, IV=0.9 ppm
B) I=1.1 ppm, II=3.2 ppm, III=1.4 ppm, IV=0.9 ppm
C) I=0.9 ppm, II=1.7 ppm, III=1.2 ppm, IV=1.1 ppm
D) I=0.9 ppm, II=1.9 ppm, III=3.4 ppm, IV=0.9 ppm
E) none of these
Correct Answer:
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