The answer is B, matrix of the mitochondria
<span>The correct answer is gold. That's why it has reserves of almost 10 000 tonnes of gold which accounts to almost a fifth of the entire world gold reserves. It is way ahead of the second placed South Africa that produces only 6 000, and Russia that does 5000. It has been going down in recent years, but it's nothing significant and will likely stay first for years to come.</span>
