Identify whether a meso compound is a possible stereoisomer of the following compounds.
a. 1,2-dibromocyclopentane
b. 1,4-dimethylcyclohexane

a. This compound has a meso form.

b. This compound does not have a meso form.

a. This compound does not have a meso form.

b. This compound has a meso form.

a. This compound does not have a meso form.

b. This compound does not have a meso form.

a. This compound has a meso form.

b. This compound has a meso form.