Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true but (R) is false.
(A) is false but (R) is true.
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The Correct Option isD
Solution and Explanation
Beri-Beri is not a viral infection; it is caused by Vitamin B1 (thiamine) deficiency. However, the Reason (R) is true — vitamin deficiencies do cause diseases.