$A$ - Acid in the stomach and saliva in the mouthare examples of physiological barrier.
$R$ - Tears from eyes is example of physicalbarrier.
$A$ - Acid in the stomach and saliva in the mouthare examples of physiological barrier.
$R$ - Tears from eyes is example of physicalbarrier.
- A
$A$ and $R$ both are correct.
- B
$A$ and $R$ both are incorrect.
- C
$A$ is incorrect, $R$ is correct.
- D
$A$ is correct, $R$ is incorrect.
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