B
Brent C
Guest
a. A star 10 light years away
b. A star having a parallax of 0.1 seconds of arc
c. A star having a parallax of 1 second of arc
d. A star 1 parsec away
b. A star having a parallax of 0.1 seconds of arc
c. A star having a parallax of 1 second of arc
d. A star 1 parsec away