Identify the C3H5Br isomers on the basis of the following information:
(a) Isomer A has the 1H NMR spectrum shown in Figure 13.40.
(b) Isomer B has three peaks in its 13C NMR spectrum: δ32.6 ppm (CH2); 118.8 ppm (CH2); and 134.2 ppm (CH).
(c) Isomer C has two peaks in its 13C NMR spectrum:  12.0 ppm (CH2) and 16.8 ppm (CH). The peak at lower field is only half as intense as the one at higher field.