Which three situations does a new transaction always start?

In which three situations does a new transaction always start?
A. when issuing a TRUNCATE statement after a SELECT statement was issued in the same session
B. when issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session
C. when issuing a CREATE TABLE statement after a SELECT statement was issued in the same session
D. when issuing the first Data Manipulation Language (DML) statement after a COMMIT or ROLLBACK statement was issued in the same session
E. when issuing a DML statement after a DML statement failed in the same session
F. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session

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