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Choose the correct statements from the following list referring to white dwarfs. (Give ALL correct answers, i.e. B, AB, BCD...)
A) Stars with a mass like the Sun will end up as a white dwarf star.
B) White dwarfs with mass greater than 1.4 times the Sun's mass cannot exist.
C) White dwarfs are less dense than red giants.
D) The pressure that balances gravity in a white dwarf is called degenerate electron pressure.
E) White dwarfs cool slowly because they are small and eventually fade-out to become black dwarfs.
F) The power source of white dwarfs is left-over heat.
G) White dwarfs are the coolest main sequence stars.
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