Assertion: Due to excessive synthesis of gene for adenosine deaminase ADA deficiency disorder is caused. Reason: It affects the human digestive system.

Both Assertion (A) and Reason(R) are correct and R is the correct explanation of A. Both Assertion (A) and Reason (R) are correct  but R is not the correct explanation of A. Assertion (A) is true but Reason (R) is not correct. Both Assertion (A) and Reason are false (F ).

Both Assertion (A) and Reason are false (F ).

ADA disorder is caused because of lack of gene for adenosine deaminase. It affects the human immune system.