單項選擇題

Which product must be installed on z/OS to allow a COBOL program running on that machine to access data on a remote DB2 for z/OS server?（）

A.DB2 for z/OS
B.DB2 Run-Time Client for z/OS
C.DB2 Connect Enterprise Edition for z/OS
D.z/OS Application Connectivity to DB2 for z/OS and OS/390

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