the red giant star Arcturus the white dwarf star Sirius B the main sequence star Alpha Mensae the blue supergiant star Rigel
I gave my students this multiple choice question: Which of these stars is most similar to the Sun?

Only one answer is correct among these 4 choices:
- the red giant star Arcturus
- the white dwarf star Sirius B
- the main sequence star Alpha Mensae
- the blue supergiant star Rigel

Could you tell me which one is correct?

the main sequence star Alpha Mensae