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Assume a table LAMPS that has no constraints. Which of the following is true about the UPDATE statement and the LAMPS table? (Choose all that apply)A. UPDATE can be used to add rows to LAMPS by setting values to all the columns.B. UPDATE can be used to remove a row from LAMPS by setting all of the row's columns to a value of NULL.C. For existing rows in LAMPS, UPDATE can add values to any column with a NULL value.D. For existing rows in LAMPS, UPDATE can remove values from any column by changing its value to NULL.

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