Final answer:
Colonel Mustard humorously accepts the record of three murders in three minutes, reflecting the dark comedy of the dialogue. Option d.
Step-by-step explanation:
The dialogue between Wadsworth and Colonel Mustard suggests a darkly comic moment in a piece of fiction, likely a play or film script. Wadsworth's line does not explicitly confirm nor deny the murders, but it acknowledges their occurrence.
On the other hand, Colonel Mustard reacts to the frequency of the murders humorously as if they were setting a 'record'. Therefore, the correct interpretation of the response is that Colonel Mustard accepts the record.
This exchange is an example of character interaction which advances the plot and reveals character traits in a narrative context.