问题
RABCQNYZ VMCAWBQ ABCQSTUA. 1 B. 2 C. 3 D. 4
RABCQNYZ VMCAWBQ ABCQSTU
A. 1
B. 2
C. 3
D. 4
请帮忙给出正确答案和分析，谢谢！
Fatal error: Uncaught [XSException] ../../../usr/local/xunsearch/sdk/php/lib/XS.php(2559): Connection refused(C#111, localhost:8384)
thrown in /usr/local/xunsearch/sdk/php/lib/XS.php on line 2559
