Which are correct:
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutics drugs are used to kill non cancerous cells.
C. \(\alpha \)-interferon activate the cancer patients’ immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukaemia blood cells counts are decreased.
Choose the correct answer from the option given below: 

The correct answer is A and C only

Explanation:

• Computed tomography (CT) and magnetic resonance imaging (MRI) detect cancers of internal organs (A): CT and MRI are advanced imaging technologies used to visualize internal structures of the body. They are highly effective in detecting tumors and abnormalities within internal organs.
• α-interferon activates the cancer patients’ immune system and helps in destroying the tumor (C): α-interferon is a type of cytokine that boosts the immune system, enabling it to better target and destroy cancer cells.

Incorrect statements:

• Chemotherapeutic drugs are used to kill non-cancerous cells): Incorrect because chemotherapeutic drugs are designed to target and kill rapidly dividing cancer cells, although they can sometimes affect non-cancerous cells as well.
• Chemotherapeutic drugs are biological response modifiers: Incorrect because biological response modifiers are different types of therapies like α-interferon, used to enhance the body's immune response, not chemotherapeutic drugs.
• In the case of leukemia, blood cell counts are decreased: Incorrect because in leukemia, there is generally an abnormal increase in white blood cell counts, not a decrease.