At 9:00 on Saturday morning, two bicyclists heading in opposite directions pass each other on a bicycle path.The bicyclist heading north is riding 5 km/hour faster than the bicyclist heading south. At 10:45, they are 47.25 km apart. Find the two bicyclists’ rates.
(A)northbound bicyclist = 23 km/h; southbound bicyclist = 17 km/h
(B)northbound bicyclist = 18 km/h; southbound bicyclist = 11 km/h
(C)northbound bicyclist = 20 km/h; southbound bicyclist = 14 km/h
(D)northbound bicyclist = 20 km/h; southbound bicyclist = 13 km/h

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