Read the following conversation and answer the question.

W: Good morning! This is Clean Air hot line. May I help you?

M: Yes, I'd like to report a smoking vehicle running on King Street.

Question: What can we learn from the conversation? 

- It is a hot and smoggy day.

- There is a traffic jam on King Street.

- A vehicle is polluting the air.


A vehicle is polluting the air.