Identify a true statement about the perspective property.

a$.$ A larger perspective value causes railroad tracks to converge over an apparently shorter distance.

b$.$ A smaller perspective value causes the railroad tracks to appear to go farther before converging.

c$.$ The perspective property can be used when there are several transformed objects within a container that all need to appear within the same $3$D space within a common perspective.

d$.$ The perspective property uses a negative value that measures the strength of the perspective effect with higher values resulting in more extreme distortion.