If You Were to Look Back from Your Spacecraft Toward

Multiple Choice

If you were to look back from your spacecraft toward the solar system and you measured that the angle between Earth and the Sun was 1 second of arc,how far from the Sun would you be? (Assume that the Earth-Sun line is at right angles to your line of sight.)

A) 1 Mpc
B) 1 AU
C) 1 pc
D) 1 ly