The Main Difference Between Benign and Malignant Tumors Is​

Multiple Choice

The main difference between benign and malignant tumors is​

A) ​that malignant cells can invade surrounding tissues.
B) ​the ability of benign tumors to metastasize.
C) ​the size of the tumor each produces.
D) ​that benign tumors attack nearly any tissue, whereas malignancies are specific to animal (including human) tissue cells.