[单选题]
A fast spaceship is traveling m4n:tudk,j* 4) ll rfvwith ah 74rzz).zbp m speed of 0.80c. How fast would light travel from the headlights of th .z 47rbp)zmhze ship relative to a stationary observer?
A. $0.20 \; c$
B. $0.80 \; c$
C. $1.0 \; c$
D. $1.8 \; c$
