Identify the type of drug used to reduce pain and irritation of the stomach.

Select the correct statement.

Match the following.

Column $I$	Column $II$
$A$. Analgesic	$I$. Phenelzine
$B$. Tranquilizer	$II$. Terfenadine
$C$. Antibiotic	$III$. Codeine
$D$. Antihistamine	$IV$. Prontosil

Which one of the following is an artificial sweetening agent?

Given below are two statements,one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Butylated hydroxy anisole when added to butter increases its shelf life.
Reason $R$: Butylated hydroxy anisole is more reactive towards oxygen than food.
In the light of the above statements,choose the most appropriate answer from the options given below:

Morphine is