If the Intrinsically Brightest Stars in Earth's Sky Have Absolute

Multiple Choice

If the intrinsically brightest stars in Earth's sky have absolute magnitudes of -10, how bright (in terms of total energy output per second) are these stars compared with the Sun, whose absolute magnitude is +4.8?

A) about 14.8 times brighter
B) about 800,000 times brighter
C) about 8000 times brighter
D) about 10¹⁵, or 1,000,000,000,000,000, times brighter