请选择ABC2^+b7[,k9Y)O8^4n*o/U 4. s __ n(M9f6T1z2\5m5j:~5r5?
A. a(M9f6T1z2\5m5j:~5r5?
B. e(M9f6T1z2\5m5j:~5r5?
C. o(M9f6T1z2\5m5j:~5r5?