Which one is correct for X, Y & Z ?
X - The excess response of the immune system to certain antigens present in the environment is called allergy.
Y - Allergies take place due to the release of chemicals like serotonin & histamine from mast cells.
Z - Adlrenalin like medicine quickly reduce the symptoms of allergy.
(a) X, Y & Z all are right.
(b) X & Y both are right & Z is wrong.
(c) X, Y, & Z all are wrong.
(d) X & Z are right & Y is wrong.