Which of the following statements regarding mutation is true?

• A. All types of mutation in a gene that codes for a certain protein lead to the protein being less efficient, resulting in genetic disorders.
• B. Somatic mutations can occur in any of the cells of the body and therefore passed on to children.
• C. Some types of mutations do not have any effect on the organism's ability to survive and reproduce in its environment.
• D. Both b and c.

Answer: (C)