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

a. Hi, Sarah! Did you hear about the cleanup event in our local park this weekend?...............c. Oh, yes! I saw a poster about it at school. Are you going to join?...............b. Definitely! It's a great way to help the community and keep the park clean...............d. I agree. Let's go together. We can invite some friends too!