Ms. Jia: I support the complaints of employees of Suntec. They have been treated unfairly. Most of them have an annual salary of less than 10,000 yuan. Mr. Chen: If wages are the main reason, it is difficult for me to agree with you. Attitude. As far as I know, the average annual salary of employees of Rida Company exceeds 15,000 yuan. Which of the following best summarizes the points of disagreement between Mr. Chen and Jia Nutu? ['Are all employees of Suntec involved in the complaint?', 'Is the annual salary of most employees of Suntec company less than 10,000 yuan?', 'Is the salary of the employees of Suntec company unfair?', 'Are wages the main cause of complaints from employees of Suntec.']