Arrange from most to least stable

Mono addition of HBr to conjugated dienes leads to multiple products, and a given addition product can arise from more than one conjugated diene. Two allylic bromide products can be synthesized from a diene. From the list given, identify the pair of dienes wherein each diene can serve as a precursor for both of the addition products. Note that not all possible products are shown. Diene HBr Identify the diene precursors. H3C مک می H3C. Br CH3 + Br H3C Two monoaddition products CH3 CH3

systematic (IUPAC) name:   H3C-CH2-NH2-H3C-CH2-CH-CH2                                            I                                            CH3    NH2  I CH-CH3     H3C-CH2-N-CH2-CH3                   I                   H                  NH-CH3           I H3C-CH-CH3                H3C-N-CH3                    I H2C-CH2 -CH-CH3     H3C-N-CH2-CH3-H3C-CH2-CH2-CH2

10-5. Does BaSO, or KCN have the lower melting point?