Consider the given two statements:
| Assertion (A): | Antihistamines are important mainstay in the treatment of allergies. |
| Reason (R): | Histamine is secreted by mast cells in tissues and by basophils in bloods. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
| 1. | Conditions in which the immune system attacks the body's own cells. |
| 2. | Disorders where the body fails to recognize pathogens. |
| 3. | Diseases caused by overproduction of antibodies. |
| 4. | Illnesses resulting from underactive immune responses. |