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Hildas ' surface colors often correspond to the low-albedo D-type and P-type ; however , a small portion are C-type .
 D-type, P-type, C-type
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:
 D-type, P-type, C-type