Four students drive to school in the same car. The students claim they were late to school and missed a test because of a flat tire. On the makeup test, the instructor asks the students to identify the tire that went flat; front driverʹs side, front passengerʹs side, rear driverʹs side, or rear passengerʹs side. If the students didnʹt really have a flat tire and each randomly selects a tire, what is the probability that all four students select the same tire?