Which of the following is TRUE about a COMMIT statement executed at the end of the T1 unit of work?

Which of the following is TRUE about a COMMIT statement executed at the end of the T1 unit of work?
A . A ROLLBACK command executed just after the COMMIT command cancels that COMMIT
B . Save points defined during transaction T1 are released only if there is a RELEASE SAVEPOINT
command executed after the COMMIT command
C . It finishes the current T1 unit of work and a new one is initiated, however it is possible to ROLLBACK to
the latest SAVEPOINT before COMMIT
D . It finishes the current T1 unit of work and a new one is initiated. All changes made by UPDATE and
DELETE commands during unit of work T1 are committed

Answer: D

Explanation:https://www.ibm.com/support/knowledgecenter/en/SSEPEK_10.0.0/sqlref/src/tpc/

db2z_sql_commit.html