11.86 years. Usually memorized as "12 years".
3 is the answer to your question
B is you answer sorry i dont quite know how to explain it in a way that you and anybody else would understand it.
The outer planets<span> are further away, larger and made up mostly of gas. The </span>inner planets<span> (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the </span>outer planets<span>, Jupiter, Saturn, Uranus and Neptune.</span>