Mark the letter A, B, C or D to indicate the best arrangement of utterances or sentences to make a meaningful exchange or text in each of the following questions from 13 to 17.

Hi Minh,
a. I’ve learned some useful tips for saving electricity online, and I think you may find them helpful too.
b. These small changes not only reduce our bills but also help protect the environment.
c. Let’s both try to follow these habits and see how much energy we can save!
d. Turning off lights when leaving a room and unplugging unused devices can make a big difference.
e. Another great idea is to use energy-efficient appliances, which save money in the long run.
Take care,
Lan