Identify the statements which hold true for cancer.(A) Cancerous cell…

The correct answer is Option (1) → (A), (B), and (D) only

(A) Cancerous cells do not show contact inhibition — Correct. Normal cells stop dividing when they touch other cells; cancer cells have lost this property.

(B) Chemotherapeutic drugs are used to kill cancerous cells — Correct. Several such drugs are used, some specific for particular tumours.

(C) Benign tumors can reach distant sites through blood — Incorrect. Benign tumours stay in their place. Spreading through the blood (metastasis) is a property of malignant tumours.

(D) Non-ionising radiations can also cause cancer — Correct. Non-ionising radiation such as UV damages DNA and can lead to cancer.

NCERT Extract:
Cancer – “… In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of these regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancer cells appears to have lost this property. As a result of this, cancerous cells just continue to divide giving rise to masses of cells called tumors.”
Cancer – “… Tumors are of two types: benign and malignant. Benign tumors normally remain confined to their original location and do not spread to other parts of the body and cause little damage.”
Cancer – “… Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause DNA damage leading to neoplastic transformation.”