请牛人看看这道SC的解

A star will compress itself into a white dwarf, a neutron star, or a black hole after it passes through a red giant stage, depending on mass.

1. After passing through a red giant stage, depending on its mass, a star will compress itself into a white dwarf, a neutron star, or a black hole.

2. The mass of a star, after passing through the red giant stage, will determine whether it compresses itself into a white dwarf, a neutron star, or a black hole.

我选1，但答案是2，请牛人看看答案对吗，如果答案对，为什么对啊？多谢！

1里面 depending on its mass修饰不清。

2里面也不对，mass不能pass through the red giant stage