Which of the following changes cannot be reversed to obtain the original objects:

A. Inflating a balloon

B. Bursting a balloon

C. Melting of wax

D. Burning of wax

Answer the following question based on the given Venn diagram.

Which of the following could be A?

A. Rusting of an iron vessel

B. Cutting of wood

C. Boiling of water

D. Rotting of fruits

Select the correct answer:

Which type of change is exhibited by the following reaction:

$\mathrm{Iron} + \mathrm{Oxygen} + \mathrm{Moisture}\to \mathrm{Rust}$