Final answer:
Compounds A, B, and C are likely structural isomers, which have the same molecular formula but differ in the connectivity of their atoms, exemplified by different substituent positions on a benzene ring.
Step-by-step explanation:
The student is likely asking about the types of isomerism compounds A, B, and C could exhibit if they all end up forming Compound B. Considering that Compound A reacts with HBr/ROOR to give Compound B in the presence of peroxides (a radical substitution reaction), and Compound C reacts with bromine and light (a photochemical bromination reaction) to produce Compound B, it seems that A, B, and C are likely to be structural isomers.
Structural isomers have the same molecular formula but differ in the connectivity of their atoms. Therefore compounds A, B, and C could be organic structures, such as different isomers of a substituted benzene ring. An example includes ortho, meta, and para isomers, where substituents are positioned differently around the ring. When referring to compounds being isomers, enantiomers are a specific type that are non-superimposable mirror images, while homologous compounds are members of the same family of compounds but differ by a CH2 group - neither of these seem to fit the context provided.