A Thunderstorm Is Brewing in the Distance $340 \mathrm {~m} / \mathrm { s } \text {, }$

Multiple Choice

A thunderstorm is brewing in the distance.Upon seeing a flash of lightning you begin counting the seconds until you hear the thunder and notice that it took 6 seconds for the sound of
Thunder to reach you.Assuming the speed of sound in air to be $340 \mathrm {~m} / \mathrm { s } \text {, }$ , how far away was the
Lightning strike?

A) 1 kilometer
B) 2 kilometers
C) 5 kilometers
D) 10 kilometers