Weinberg was the first to identify a link between a c-onc and cancer by

A) using a transfection test with liver DNA that transformed normal cells to hepatomas.
B) cloning a DNA fragment from human colon cancer and showing that it could transform normal cells to malignant cells.
C) serially transfecting DNA from bladder cells first into nontransformed cells and then into transformed cells.
D) cloning the transforming DNA fragment from the transformed cells and showing it transformed normal cells.
E) None of these