Consider the sentence: The model's performance isn't great. This sentence is processed using two different methods for breaking down text into basic units (tokens), resulting in the following outputs:

• Method A: ['The', 'model', ''s', 'performance', 'is', 'n't', 'great', '.']
• Method B: ['The', 'model's', 'performance', 'isn't', 'great', '.']

By analyzing the differences between these two lists of tokens, what can be inferred about the underlying rules of each method?

Distinguishing Words from Tokens

A programmer is using a specific method to break down the sentence "Let's re-evaluate the model's performance." into a list of basic units. The method's rules are: 1) Split the text by spaces, and 2) Treat each punctuation mark (like '-', ''', and '.') as a separate unit. Which of the following outputs correctly applies these rules?