Fact 1: Some viruses can cause cancer.

Fact 2: Cancer is an abnormal growth of cells.

Given the two facts above, answer the question "What be caused by some viruses?" with the following options: 
- deadly and devastating
 - a lot of human deaths
 - Plant growth is reduced
 - Something coming from a gland
 - death and devastation
 - contamination
 - Abnormal cell growth
 - extinction


 

       Abnormal cell growth  