A 17-year-old male presented to the emergency department with a fever of 40 degrees Celsius and a headache. He appears ill, diaphoretic, and admits to having been diagnosed with an upper respiratory infection yesterday by his college health clinic. On physical exam, he exhibits neck stiffness and a petechial rash on his back and chest. A decision was made to perform a lumbar puncture. Which of the following Gram stain results will most likely be seen in this patient?

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