Read the following passage and solve the questions based on it.
Bus route number 761 has exactly six stops on its route. Any bus plying on this route starts from the initial position, then stops first at stop one and then at stops two, three, four, five, and six respectively. After the bus reaches stop six, the bus turns and returns to its initial position and repeats the cycle. Buses are not allowed to carry people on its return journey.
Following are the six stops—L, M, N, O, P, and Q in no particular order. Further, following observations have been made regarding the stops on this route:
Observation 1 – P is the third stop.
Observation 2 – M is the sixth stop.
Observation 3 – The stop Q is the stop immediately after O.
Observation 4 – N is the stop immediately before L.
A passenger boards a bus on this route at O, rides past one of the stops, and alights at P. Which of the following must be true?