Organic Molecules with Only Hydrogens and Five Carbon Atoms Can

Multiple Choice

Organic molecules with only hydrogens and five carbon atoms can have different structures in all of the following ways except

A) by branching of the carbon skeleton.
B) by varying the number of double bonds between carbon atoms.
C) by varying the position of double bonds between carbon atoms.
D) by forming a ring.
E) by forming enantiomers.