A patient with a nosocomial pneumonia has a sputum gram stai…

A patient with a nosocomial pneumonia has a sputum gram stain that shows many WBCs and numerous small gram negative coccobacilli.  The organism grew in 24 hours as a mucoid hemolytic colony on SBA and a colorless colony on MAC.  The organism has the following characteristics: catalase positive, oxidase negative, arginine negative, lysine negative, nitrate negative, and ONPG negative.  The organism is: