A bottle of perfume is opened at one end of a room. A person sitting at the other end smells the perfume within a few minutes.
Which explanation is true?

A- The molecules of perfume moved directly from the perfume bottle to the person.

B- The molecules of perfume moved directly from the person to the perfume bottle.

C- The molecules of perfume moved randomly in all directions, but the overall movement was from the person to the bottle.

D- The molecules of perfume moved randomly in all directions, but the overall movement was from the bottle to the person.