Which of the following is NOT true about the yearly tractor pull in Chapel Hill, Tennessee

Which of the following is NOT true about the yearly tractor pull in Chapel Hill, Tennessee？

A．People hire pullers to compete.

B．The first tractor pull started in 1976.

C．It takes place in July every year.

D．The sport is popular around much of the country.

请帮忙给出正确答案和分析，谢谢！