A 58-year-old man presents at your office complaining of extreme pain in his right testicle. Physical examination shows considerable swelling. A small amount of urethral exudate could be aspirated. Microscopic examination and Gram staining showed the presence of bacteria. Those bacteria most likely are
A) Gram-negative cocci B) Gram-negative diplococci C) Gram-positive cocci D) Gram-positive rods