[单选题]
A fast spaceship is traveling with a speh-k;3rng 6 qzd .ufwf4i.i es9ed of 0.80c. How fast would lighfsu9/ kenh : h d).)q;7ttyrjet travel from t shd9j;h t)7)nqyte /.feruk:he headlights of the ship relative to a stationary observer?
A. $0.20 \; c$
B. $0.80 \; c$
C. $1.0 \; c$
D. $1.8 \; c$
