单选题Which correctly describes the tiers of the Oracle Workflow architecture?（）A
Oracle Database tier and Application server tier onlyB
Oracle Database tier, Application server tier, and End-user client tier onlyC
Oracle Database tier, Application server ti
题目内容(请给出正确答案)
单选题
Which correctly describes the tiers of the Oracle Workflow architecture?（）
A
Oracle Database tier and Application server tier only
B
Oracle Database tier, Application server tier, and End-user client tier only
C
Oracle Database tier, Application server tier, and Development client tier only
D
Oracle Database tier, Application server tier, Development client tier, and End-user client tier
