102109
Various modulation schemes are used for AM stereo , of which the best-known is Motorola 's C-QUAM , the official method for most countries in the world that transmit in AM stereo .
 Motorola
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Motorola