Which two statements are true about the query execution?

View the code sequence:


Examine the Exhibit to view the execution plan.


Which two statements are true about the query execution?
Exhibit:


A. The optimizer joins specified tables in the order as they appear in the FROM clause.
B. The CUSTOMERS and ORDERS tables are joined first and the resultant is then joined with rows returned by the ORDER_ITEMS table.
C. The CUSTOMERS and ORDER_ITEMS tables are joined first the resultant is then joined with rows by the ORDERS table.
D. The optimizer has chosen hash join as an access method as the OPTIMIZER_MODE parameter is set to FIRST_ROWS.

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