A system generates four candidate text sequences to complete a prompt. A scoring function, r(sequence), evaluates the quality of each candidate. The system uses the argmax operator to select the best one based on these scores: best_sequence = argmax(r(sequence_i)). Given the following candidates and their scores, what is the output of the argmax operation?

• Candidate A: "The cat sat on the mat." (Score: 0.82)
• Candidate B: "A feline rested on the rug." (Score: 0.91)
• Candidate C: "The mat was under the cat." (Score: 0.75)
• Candidate D: "On the mat, a cat sat." (Score: 0.89)

Debugging a Candidate Selection Script

Distinguishing max and argmax in Candidate Selection