Mark the letter A, B, C, or D to indicate the correct arrangement of the sentences to make a meaningful dialogue each of the following questions.

a. Hi, Ben! Are you studying for the math test? ...............b. Me too! Maybe we can study together and help each other. ...............c. I'm studying too. I find math hard, but I'm trying my best. ...............d. That's a good idea! Let's meet in the library after school. ...............e. Hi, Lily! Yes, I am. It's a bit difficult for me. How about you?