An Earthquake Emits Both P-Waves and S-Waves That Travel at Different

Multiple Choice

An earthquake emits both P-waves and S-waves that travel at different speeds through the Earth.A P-wave travels at 9,000 m/s and an S-wave at 4,000 m/s.If P-waves are received at a seismic station 44.2 s before an S-wave arrives,how far is the station from the earthquake center?
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A) 159 km
B) 636 km
C) 318 km
D) 122 km
E) ​2,210 km