Question ID:PT81 S4 Q13 Passage:The operators of an outdoor amusement center are designing an obstacle course that will consist of a sequence of six separate obstacles: a rope bridge, a spinning platform, a tunnel, a vaulting apparatus, a wall, and a zipline. The obstacles will be placed in order from start to finish (first to sixth), in accordance with the following constraints:The spinning platform must be the third or fourth obstacle.The wall must be placed just before the zipline.The rope bridge cannot be placed just before or just after the vaulting apparatus. Stem:If the tunnel is the first obstacle, which one of the following must be true? Correct Answer Choice:CChoice A:The rope bridge is the second obstacle. Choice B:The rope bridge is the fourth obstacle. Choice C:The spinning platform is the third obstacle. Choice D:The wall is the fourth obstacle. Choice E:The zipline is the sixth obstacle.