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单选题
Given that tables T1 and T2 contain the following rows: Table T1: C1 C2 5 4 5 2 5 5 Table T2: C1 C2 5 1 5 2 5 3 Which of the following queries will return only those rows that exist in T1 and not in T2?（）
A

SELECT * FROM T1 MINUS SELECT * FROM T2

B

SELECT * FROM T1 EXCEPT SELECT * FROM T2

C

SELECT * FROM T2 UNION EXCEPT SELECT * FROM T1

D

SELECT * FROM T1 NOT EXISTS SELECT * FROM T2

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