A journey takes 4 hours 30 minutes at a speed of 60 km/hr. If the speed is 15 m/s, then the journey will take :
[A] 5 hours
[B] 5 hours 30 minutes
[C] 6 hours
[D] 6 hours 25 minutes

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This question is part of UPSC Prelims Practice and Mock Tests membership programme.