The cells of the malignant tumors exhibit 
1. Metastasis 
2. Contact inhibition 
3. High differentiation 
4. Slow proliferation 

A normal gene that codes for proteins that help to regulate cell growth and differentiation and can, due to mutations or increased expression, lead to neoplastic transformation of cells, is called as:
1. Oncogene
2. Proto-oncogene
3. V-onc
4. Psuedogene

Proto-oncogenes are seen in :
1. Normal cells
2. Malignant cells
3. Virus infected cells 
4. Cells exposed to X-rays

DNA damage leading to neoplastic transformation can be brought about by ionizing radiations like :
1. UV rays 
2. Gamma rays 
3. Infrared waves
4. Radio waves

Consider the following statements:

I. Cancer is essentially a genetic disease caused by multiple mutational events.

II. Cancerous cells are rapidiy dividing cells that exhibit contact inhibition.

III. Metastasis is the most feared complication of any cancer

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III