Jawabanmu

2014-08-12T09:44:10+07:00
A. H3C-CH2-C(C2H5)-CH(CH3)-CH2-CH3
b. H3C-CH(CH3)-CH(CH3)-CH2-CH(CH(CH3)2)-CH2-CH3
c. H3C-CH2-CH(CH3)-C(C2H5)-CH2-CH3