Each of the following is mentioned in the passage as a difference between G10 garnet and other versions of garnet EXCEPT
A. level of oxidation
B. commonness of occurrence
C. chemical signature
D. place of formation
E. appearance in conjunction with diamonds
前面的帖子把23和25都讨论了，可是，有没有人告诉我Q24的答案，使A还是E呢？万分感激！ | 
