What is the difference between theme and universal theme?

a. theme refers to the central insight revealed through an american story, while universal theme refers to a theme revealed through a story of foreign origin.
b. theme refers to a central message that applies to anyone, anywhere, while universal theme is particular to a certain individual, historical context, or culture.
c. theme refers to the central insight revealed through a story, while universal theme refers to a theme that applies to anyone, anywhere.
d. theme and universal theme are two terms that have the same definition.