Question 9 What 'truncate table' command means: Not yet answered Marked out of 1.00 O a. Delete table O b. Delete all data from a table. O c. Delete redundant data in a table. O d. Both A and B. P Flag question Question 10 How can you delete a constraint named "cons1" from table registration? Not yet answered Marked out of 1.00 a. Drop constraint cons1; O b. Drop cons1; O c. Alter table registration drop cons1; O d. Alter table registration drop constraint cons1; P Flag