Assertion : Inspite of exposure to large number of infectious agents humans are resistive to diseases.
Reason : Humans are able to defend against most of the foreign agents due to the ability to fight disease-causing organisms.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertin is true but reason is false.
D. If both assertion and reason are false.
