How would you distinguish the Inca record keeping system from that of the Mayans?

Question

Incas developed the most complex system of writing in the Americas, whereas Mayans used simple scratches on bones to keep records.

Neither Incas, nor Mayas, developed a system of record keeping.

Incans had no writing, but kept records with a series of knotted ropes, whereas the Mayans developed writing.

Incas kept records chiseled in stone, whereas Mayans wrote their

records on papyrus reed mats.

Answer 1

the answer is #3 where the incas had knots, but the mayans did not develop writing, they simply borrowed it from the olmecs who themselves developed it.