7. What was Swimmer C's average speed? Remember the time on the graph is in minutes and the distance in the graph is meters. A.4.8 km/h
B.2.4 km/h
C.2400 kmh
D.4800 km/h

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?