单项选择题
What can you determine about the following linguistic sorts based only on their names?（）
1. GERMAN
2. FRENCH_M multilingual
A. 1 is a monolingual sort.
B. 2 is a monolingual sort.
C. 1 is case insensitive.
D. Both 1 and 2 are case insensitive.
E.Case sensitivity is unknown.
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