Examine the structure of the EMPLOYEES and NEW_EMPLOYEES tables: EMPLOYEES EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE NEW EMPLOYEES EMPLOYEE_ID NUMBER Primary Key NAME VARCHAR2(60) Which UPDATE statement is valid?

UPDATE new_employees SET name = (SELECT last_name|| first_ name FROM employees WHERE employee_id =180) WHERE employee_id =180;

UPDATE new_employees SET name = (SELECT last_name ||first_name FROM employees ) WHERE employee_ id =180;

UPDATE new_employees SET name = (SELECT last_name || first_name FROM employees WHERE employee_id =180) WHERE employee_id =(SELECT employee_id FROM new employees);

UPDATE new_employees SET name = (SELECT last name || first_name FROM employees WHERE employee_id = (SELECT employee_id FROM new_employees)) WHERE employee_id =180;