Consider the following statements-
Assertion (A): Biochemical test to know the nutritional level is useful in the early detection of nutritional disease.
Reason (R): The disease can be caught indirectly by laboratory tests.
1. (A) and (R) both are correct and (R) is the correct explanation of (A).
2. (A) is correct, but (R) is wrong.
3. (A) is wrong, but (R) is correct.
4. (A) and (R) both are not correct.