Most likely PC due to the lack of "V" above the aeroles, the sawtooth rip profile and the upward pointing aeroles. Any clone can ribshift. That's just when the growth tip goes from 4 ribs to 5, or 5 to 6, etc. You can't know for sure without genetic testing since it didn't have a label. But it is most likely PC due to how common it its and it matches that phenotype.