Which command must be run for IBM DB2 before IBM Tivoli Storage Productivity Center V4.2 is
installed in a UNIX environment?

A.
./usr/db2inst1/sqllib/db2profile
B.
. /opt/db2inst1/sqllib/db2profile
C.
. /home/db2inst1/sqllib/db2profile
D.
. /home/sqllib/db2profile/db2inst1
Explanation: