Fact 1: Some mollusks are nearly microscopic. Fact 2: Mollusks are invertebrates and are no exception. Given the two facts above, what are nearly microscopic?

Choose from: A). all invertebrates. B). planets. C). some invertebrates. D). remains of prehistoric life. E). barnacles. F). Veins and arteries.. G). major threat to health. H). all vertebrates.
The answer is:
C).