The correct order priority for the `-CONH_(2)CN" and "-COOR` is
The correct order priority for the `-CONH_(2)CN" and "-COOR` is
A. `-CONH_(2),-COOR,-CN`
B. `-COOR,-CONH_(2),-CN`
C. `-CN,-COOR,-CONH_(2)`
D. `-CN,-CONH_(2),-COOR`
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