单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now, listen to the conversation.

Which statements is true about a light cigarette

A.A light cigarette contains low nicotine and tar content.
B.Smoking a light cigarette is different from smoking a regular one.
C.Women who smoke light cigarettes want to get higher levels of nicotine.
D.Tobacco companies advertise cigarettes as "light" to obscure smoking risks.