Assertion : Dust particles when come in contact with respiratory tract lead to sneezing, running nose, redness of eyes etc.
Reason : Allergic disorders are caused due to release of histamine.

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but Ris not correct explanation of A
C. A is true but R is false
D. A and R are false

Answer

A