7 (consider table A and table B) Which of the following command will return a new table that has one column with 3 records? * (2 Points) select studentid from A union select name from B; select studentid from A,B; select studentid from A union select studentid from B; select studentid from A,B where A.studentid=B.studentid; select A. studentid, name from A,B; 8 (consider table A and table B) What is the output of the following command? select distinct A.studentid from A, B where A. studentid=B.studentid; Note: Each answer represents a column * (2 Points) O 223 O 111222 333 0 123 23 7 (consider table A and table B) Which of the following command will return a new table that has one column with 3 records? * (2 Points) select studentid from A union select name from B; select studentid from A,B; select studentid from A union select studentid from B; select studentid from A,B where A.studentid=B.studentid; select A. studentid, name from A,B; 8 (consider table A and table B) What is the output of the following command? select distinct A.studentid from A, B where A. studentid=B.studentid; Note: Each answer represents a column * (2 Points) O 223 O 111222 333 0 123 23