Which three are true?

A.
A setAutoCommit (False) method invocation starts a transaction context.

B.
An instance of Savepoint represents a point in the current transaction context.

C.
A rollback () method invocation rolls a transaction back to the last savepoint.

D.
A rollback () method invocation releases any database locks currently held by this
connection object.

E.
After calling rollback (mysavepoint), you must close the savepoint object by calling
mySavepoint.close() .