When editing a table, one can right-click on any column and select “Lock”. What does the Lock function do?

A.
“Lock” will request a table lock from the DBMS so that no other changes can be made.

B.
“Lock” will lock the column in place so that it is always visible during horizontal scrolling.

C.
“Lock” will lock the editing session so that no additional changes can be made to that column.

D.
“Lock” will lock the named Edit Request and finalize it in theOptim Directory.