查看表CUSTOMERS的CUST_NAME列数据： CUST_NAME ------------------------------ Renske Ladwig Jason Mallin Samuel McCain Allan MCEwen Irene Mikkilineni Julia Nayer 你想要查看“last name”以“Mc”或“MC”开头的CUST_NAME列数据， 如下哪两个WHERE子句可以得出需要的结果？BD A WHERE SUBSTR(cust_name,INSTR(cust_name,' ') +1 ) LIKE 'Mc%' OR 'MC%' B WHERE UPPER (SUBSTR(cust_name, INSTR(cust_name, ' ') +1 ) ) LIKE UPPER('MC%') C WHERE SUBSTR(cust_name, INSTR(cust_name,' ') +1 ) LIKE 'Mc%' D WHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ') +1 ) ) LIKE 'Mc%' E WHERE INITCAP (SUBSTR(cust_name, INSTR(cust_name,' ') +1 ) ) IN ('MC%', 'Mc%)