The GPFS implementation of Data Management API is compliant to which Open Group storage management S

The GPFS implementation of Data Management API is compliant to which Open Group storage management Standard?

A. XSH
B. XBD

C. XDSM

D. X / Open

Reference: https://www.ibm.com/support/knowledgecenter/en/SSFKCN_4.1.0/com.ibm.cluster.gpfs.v4r1.gpfs400.doc/bl1dmp_intro.htm