What Is the Difference Between a Benign and a Malignant

Multiple Choice

What is the difference between a benign and a malignant tumor?

A) Benign tumors are composed of cancer cells; malignant tumors are not.
B) Benign tumors are not the result of a failure of a cell cycle control system; malignant tumors are.
C) Benign tumors do not metastasize; malignant tumors do.
D) Benign tumors do not form lumps; malignant tumors do form lumps.