The first sentence “…Pueblo, Colorado passed a law making public places and workplaces smoke-free” in the 5th paragraph means that __________.

A、in Pueblo, people can get free cigarettes in public places
B、in Pueblo, it is free to smoke in public places and workplaces
C、in Pueblo, people have to pay if they want to smoke in public places and workplaces
D、in Pueblo, people are not allowed to smoke in public places and workplaces