Which is the best approach to update the last name of the student Donette Figgins to Smith
UPDATE Students SET last_name = 'Smith' WHERE last_name = 'Figgins' AND first-name = 'Donette';
UPDATE Students SET last_name = 'Figgins' WHERE email = '[email protected]';
UPDATE Students SET last_name = 'Figgins' WHERE last_name = 'Smith' AND first-name = 'Donette';
UPDATE Students SET last_name = 'Smith' WHERE email = '[email protected]';