Which of the following statements about cancer is false

Which of the following statements about cancer is false
A)oncogenes arise from mutations in proto-oncogenes
B)tumor suppressor genes normally interact with growth-inhibiting factors to block cell division
C)more than 100 oncogenes and 15 tumor suppressor genes have been identified
D)oncogenes were first discovered in mouse models for cancer
E)the development of cancer is usually a multistep process involving both oncogenes and mutated tumor suppressor genes


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