Fact 1: Some viruses can cause cancer.

Fact 2: Hepatitis B virus causes liver cancer.

Given the two facts above, answer the question "what can hepatitis b form?" with the following options: 
- harmful substances
 - liver cancer
 - smoking tobacco
 - It expands
 - layers of fat
 - bioaerosols
 - anemia
 - contamination


 

  liver cancer       