Which of these statements are true?

Supergiants are hotter and brighter than white dwarfs

Supergiants are hotter and brighter than white dwarfs

White Dwarfs are the coolest starsWhite Dwarfs are the coolest stars

All main sequence stars are bright All main sequence stars are bright Main sequence can be cool and dim or hot and bright

Only the first two statements are true:

Supergiants are hotter and brighter than white dwarfs
White dwarfs are the coolest stars