單項選擇題以下屬于行子查詢的是()。

A.SELECT name FROM sh_goods_category WHERE id=(SELECT category_id FROM sh_goods WHERE name=’智能手機’);
B.SELECT name FROM sh_goods_category WHERE id IN(SELECT category_id FROM sh_goods);
C.SELECT id,price,score FROM sh_goods WHERE(price,score)=(SELECT MAX(price),MIN(score) FROM sh_goods);
D.以上答案都不正確


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