In the COURSE_ENROLLMENT form module, you define a master-detail relation between the COURSES_OFFERED data block and the STUDENT data block, respectively. To implement block coordination, which statement must be true?（）

• A、 The Enforce Primary Key property on the STUDENT block is set to Yes. 
• B、 The Alias property on the COURSES_OFFERED block is set to Student. 
• C、 The Copy Value from item property on the foreign key item in the STUDENT blocks is set to the primary key item of the COURSES_OFFERED block. 
• D、 The Synchronize with item property on the foreign key item in the STUDENT block is set to the primary key item of the COURSES_OFFERED block.