Which of the following could be an example of Recommendation Systems? ( 1 ) A job recommendation system that retrieves a list of job positions that satisfy a job seeker's desire based on past work experience, salary expectations, work profile, etc., or a list of talented candidates that meet the requirement of a recruiter. ( 2 ) A news recommendation system that helps users find articles that are most interesting to them based on their previous likes / dislikes and preferences such as areas of interest, preferred length of articles, etc. ( 3 ) A restaurant recommendation system based on previous ratings provided by customers and information on the customer habits, locality, price range, etc. ( 4 ) An ML model predicting the sales of the organization based on previous sales data and other factors contributing to sales