第 10 题 (多选题)： Which two queries execute successfully.

A. SELECT NULLIF(100, 100) FROM DUAL . B. SELECT NULLIF(100,A) FROM DUAL; . C. SELECT COALESCE(100, 'A') FROM DUAL;. D. SELECT COALESCE(100, NULL, 200) FROM DUAL; . E. SELECT NULLIF(NULL, 100) FROM DUAL; 显示答案