A seismograph at Station A records a P wave followed by an S wave 30 seconds later. Station B, located farther away, records a 50-second gap between wave arrivals. What conclusion can be drawn from comparing these two stations?

The time gap between a P wave and an S wave increases as the distance from the epicenter increases. Station A has a 30-second gap, while Station B has a 50-second gap, so Station A is closer to the epicenter than Station B. The gap does not show that Station B experienced a higher-magnitude earthquake.

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