Select two risk factors for self-harming behavior a. having never abused drugs or alcohol b. being female c. having bipolar disorder or schizophrenia d. being a teenager or young adult

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.