Amongst the following compounds, which one is an antacid?

Benzyl isocyanide can be obtained by :

A.

B.

C.

D.

Choose the correct answer from the options given below :

Match List I with List II

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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.

Reason (R) : Silica gel adsorbs moisture from air via adsorption, thus protects the instrument from water corrosion (rusting) and / or prevents malfunctioning.

In the light of the above statements, choose the correct answer from the options given below :