The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Among hydracids, HF is the weakest acid and HI is the strongest acid.
HF is stored in gutta-percha or wax bottles. It cannot be in glass or silica bottles as it attacks silicates as well as silica.
Hence, both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.