I would answer B!! But your guess is as good as mine!!
Answer:
the first energy level is closest to nuclear the second energy level is a little farther away than the first
Just like how heat moves from a region of higher
temperature to a region of lower temperature, molecules also tend to move from
a region of higher concentration to a region of lower concentration. This is
called natural diffusion and is naturally happening to reach stability.
The answer is true.the molecule becomes reduced.