Answer:
C. Some real science and some exaggerated science
Step-by-step explanation:
Science fiction involves a great deal of creativity. Fiction contains imagined elements that actually do not exist in the real world.
Science fiction must contain some elements of real scientific facts. This is the basis upon which the work is classified as a science fiction.
Also, being a fiction, it must contain some elements of fantasy or exaggerated science. These are not real science but mere imagination of the author.