Match the Column I with Column II :

A-1, B-2,C-3

The correct answer is Option (3)- A-1, B-2, C-3

A. Chemical agents: These are substances that can induce genetic mutations and increase the risk of cancer. The chemical carcinogens present in tobacco smoke have been identified as a major cause of lung cancer.

B. Physical agents: These agents refer to physical sources of radiation or exposure that can damage DNA and promote cancer development. Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.

C. Biological agents: These agents are typically infectious agents, such as viruses or bacteria, that have the ability to disrupt normal cellular functions and contribute to the development of cancer. Examples of biological agents include oncogenic viruses, which have specific genetic elements that can lead to uncontrolled cell growth and the formation of tumors.