What is the passage mainly about？A．Getting the kids prepared for college early.B．Teaching

What is the passage mainly about？

A．Getting the kids prepared for college early.

B．Teaching lessons about Economics in the middle school.

C．Picking classes for the first year of higt school.

D．Developing management skills at a high school.

请帮忙给出正确答案和分析，谢谢！