Which of the following molecules contain sulphur atom in their structures?

I. Morphine

II. Heroin

III, Penicillin

IV. Terpineol

V. Cimetidine

In Wurtz-Fittig reaction a compound $X$ reacts with alkyl halide. What is $X$ ?

$$ \text { The product }(C) \text { in the following reaction sequenceis } $$