How Far Away Is a Lightning Strike If You Hear

Multiple Choice

How far away is a lightning strike if you hear the thunderclap 8 s after you see the lightning bolt strike? (v_sound = 340 m/s,v_light = 3 × 10⁸ m/s)

A) 43 m
B) 340 m
C) 2,380 m
D) 2,720 m
E) ​24 × 10⁸ m/s