170.Which two statements are true regarding the DELETE and TRUNCATE commands? (Choose two.)

170.Which two statements are true regarding the DELETE and TRUNCATE commands? (Choose two.)
A.DELETE can be used to remove only rows from only one table at a time.
B.DELETE can be used to remove only rows from multiple tables at a time.
C.DELETE can be used only on a table that is a parent of a referential integrity constraint.
D.DELETE can be used to remove data from specific columns as well as complete rows.
E.DELETE and TRUNCATE can be used on a table that is a parent of a referential integrity constraint having ON DELETE rule .
答案：AE
解析：delete一次一个表，排除B，C错误，是因为only的原因，delete只能整行删除，排除D