Which command can be used to view the configured global registry settings for all installed DB2 copies found
on a Linux server?

A.
db2val

B.
db2set

C.
db2look

D.
db2greg

Explanation:
https://www.ibm.com/support/knowledgecenter/en/SSEPGG_9.5.0/
com.ibm.db2.luw.admin.cmd.doc/doc/r0002025.html