Which Statement About Genetic Mutations Is False

Which statement about genetic mutations is false?

A) Genetic mutations are always harmful.
B) Genetic mutations can be caused by ultraviolet light.
C) Genetic mutations in eggs or sperm may be particularly significant because they can be passed to offspring, where they will affect every cell in the offspring's body.
D) Genetic mutations are the ultimate source of all genetic variation, and so they provide the raw materials for evolution and natural selection.