Answer:
The letter A is correct.
Step-by-step explanation:
The whole book is narrated by Huck and this is no different in chapter 5. With this we can ensure that the narration in chapter 5 is made in the first person and for that reason we have access to all thoughts of huck which contributes a lot with the story, because readers are able to understand Huck's feelings, sensations, and thoughts. This makes the story deeper and more understandable and makes readers increasingly sympathetic to Huck.