L dwarfs and T dwarfs are spectral classes of _____.
A) brown dwarf stars
B) red giant stars
C) Y dwarf stars
D) white giant stars
Question 2
Which of the following stars is a luminous red supergiant and is classified M2 Ia?
A) Spica
B) Betelgeuse
C) Pollux
D) Miaplacidus