Mark the letter A, B, C or D to indicate the best arrangement of utterances or sentences to make a cohesive and coherent exchange or text in the following question.

a. Jake: I've been spending a lot of time on my phone lately, especially on social media.
b. Emily: Don't let it get out of hand. You should cut down on your screen time. It can affect your health and concentration.
c. Jake: You're right. I'll try to manage my time better.
d. Emily: That's true, but you can still set limits.
e. Jake: I know, but it's hard because I need my phone for studying too.