According to the author, what is an unwise decision about the area that spans the length o

According to the author, what is an unwise decision about the area that spans the length of the West Collet Canal from Cemetery Road to Dean Street？

A．Permission for private vehicles to park in the area.

B．Covering up the surface of the canal with concrete.

C．Blocking up the entrance of this special area.

D．Encouraging vendors to do business in the area.

请帮忙给出正确答案和分析，谢谢！