Which two options can be specified in order to access a system-period temporal table for a specific point in time guaran

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Which two options can be specified in order to access a system-period temporal table for a specific point in time guaranteeing accurate results?

A. A period-specification placed in the FROM clause of a subselect.
B. A period-specification placed in the WHERE clause of a subselect
C. A SELECT statement predicate against the transaction start ID of the base table.
D. A predicate against the start and end columns of the base table placed in the WHERE clause of a subselect. E. A SET of the CURRENT TEMPORAL SYSTEM_TIME special register to a non-null value prior to a SELECT against the temporal table.