Which statement about the maya is not true?
a. the maya lived in the regions of southern mexico, the yucatán peninsula, guatemala, and belize.
b. the ancient mayan civilization existed from around 1500 bce to 1500 ce, flourishing from 300 to 900 ce.
c. around 900, the maya suffered some sort of catastrophe, and by 1100 the population was reduced by almost 90 percent.
d. the maya built great cities such as machu picchu without the use of a writing system or wheeled vehicles.