40 POINTS
As the airplane dives downward, why does the apple become "weightless"?
A) because it no longer has mass
B) because it is in the air
C) because the apple is moving at the same speed as gravity makes it move
D) because bill ate the apple

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?