All of the statements EXCEPT one are true about mutations. Which statement is false?

Responses
A Mutations must be present in parents and then passed to offspring.Mutations must be present in parents and then passed to offspring.
B Mutations can be positive and produce organisms with improved traits.Mutations can be positive and produce organisms with improved traits.
C Mutations can be fatal to the organism that has a mutation, if the mutation is in a critical gene.Mutations can be fatal to the organism that has a mutation, if the mutation is in a critical gene.
D Mutations can be silent, and not affect the organism that has them, if the mutation is in a non-critical area.

A Mutations must be present in parents and then passed to offspring.