Compound A, an alkyl bromide with chemical formula C3H7Br , reacts with KotBu/HotBu to yield compound B. Compound B in turn reacts with (1) BH3 , (2) H2O2 , NaOH to yield compound C. Compound C reacts with PCC to yield compound D. Propose a structure for compound B that is consistent with the following predicted 1H-NMR spectrum