Fact 1: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.

Fact 2: Tumor Tumors are masses of neoplastic origin.

Given the two facts above, answer the question "cells that divide which way may form masses of neoplastic origin?" with the following options: 
- non-neoplastic
 - controllably
 - epidermal
 - an organism's body
 - seldomly
 - epidermis and dermis
 - uncontrollably
 - Veins and arteries.


 

       uncontrollably  