单项选择题

A.WHEREINITCAP(SUBSTR(cust_name,INSTR(cust_name,"")+1))LIKE"Mc%"
B.WHEREUPPER(SUBSTR(cust_name,INSTR(cust_name,"")+1))LIKEUPPER("MC%")
C.WHERESUBSTR(cust_name,INSTR(cust_name,"")+1)LIKE"Mc%OR"MC%"
D.WHERESUBSTR(cust_name,INSTR(cust_name,"")+1)LIKE"Mc%
E.WHEREINITCAP(SUBSTR(cust_name,INSTR(cust_name,"")+1))IN("MC%,"Mc%")