Which answer best explains why the workers laugh at Neftalí when he returns to the train?
A. Neftalí is carrying his "treasures" with him, like small feathers, dried leaves, and a pinecone.
B. Neftalí is soaking wet after falling into a river.
C. Neftalí has a rhinoceros beetle in his hands to bring home with him as a pet.
D. Neftalí has somehow managed to lose his shirt in the forest.