Mark the letter A, B, C, or D to indicate the correct response to each of the following exchanges. Two friends Nam and Lan are talking about the topic of global warming.
Nam: Do you do anything to protect the environment? - Lan: ____
A. I refuse to use plastic bags and try to recycle as much as possible.
B. I use a lot of plastic bags and containers to save the environment.
C. I'm not interested in the subject of environment.
D. I don't want to change my lifestyle.