[单选题]
A fast spaceship is traveling with a speed8o. joq:liafa1v qw/+ of 0.80c. How fast ; (j0xiuolnc.i2hs.lurzy5+ would light travel from the headlights of the ship relative0l5l.+rius; y 2hn( icouz.jx to a stationary observer?
A. $0.20 \; c$
B. $0.80 \; c$
C. $1.0 \; c$
D. $1.8 \; c$
