There are three descriptions of the working conditions of a company employee: "All employees of the company are due diligence" "The company employees are not all due diligence" "Ms. Wen Qian is due diligence", two of which are false. According to the question, still can't determine which of the following is true? ['Ms. Wen Qian failed to perform her duties.', 'All employees of the company are not diligent.', "Some of the company's employees are not due.", 'All employees of the company are dedicated.']