Which three audio codecs are natively supported by Windows Phone 7?

Which three audio codecs are natively supported by Windows Phone 7? (Choose three.)

A.
OGG

B.
MP3

C.
WMA

D.
AIFF

E.
ADPCM

Explanation:
http://msdn.microsoft.com/en-us/library/cc189080(vs.95).aspx