Fact 1: Cancer cells divide more often than normal cells, and grow out of control.

Fact 2: When a cancer cell divides, two new cancer cells are formed.

Given the two facts above, answer the question "Cancer cells form new cells how?" with the following options: 
- out of spite
 - massive damage
 - out of magic
 - Move to another area
 - out of control
 - rapid expansion
 - Localized damage
 - out of order


 

     out of control    