Epithelial Cells Are More Likely to Become Cancerous Than Other

Multiple Choice

Epithelial cells are more likely to become cancerous than other tissue cells because epithelial cells ____.​

A) ​lack a nucleus
B) ​are always exposed to the external environment
C) ​are only found in simple tissues
D) ​undergo DNA replication more often
E) ​have an extensive blood vascular system