Maxillary molar crown of an early fossil primate featured a trigone made of three main cusps, these cusps were _______ ?

A. Mesiobuccal, Distobuccal and Mesiolingual
B. Mesiolingual, Mesiobuccal and distolingual
C. Distrobuccal, distolingual and Mesiolingual
D. Distolingual, Mesiobuccal, and Linguo buccal