Three structural isomers have the formula C5H12. Draw and name the isomers using IUPAC names.
A. 2-Methylpentane, Pentane, 2,2-Dimethylpropane
B. 3-Ethylbutane, 2-Methylpentane, n-Pentane
C. Isopentane, Neopentane, 2,2-Dimethylbutane
D. Cyclopentane, n-Pentane, Isopentane