Assertion: Formic acid reduces mercuric chloride to mercurous chloride on heating , while acetic acid does not.
Reason : Formic acid is stronger acid than acetic acid.
A. If both assertion and reason are correct and reason is correct explanation for assertion.
B. If both assertion and reason are correct but reason is not correct explanation for assertion.
C. If assertion is correct but reason is incorrect.
D. If assertion and reason are both incorrect.
