Which of the following are true of machine learning as a generic method for collecting job requirements information? (Check all that apply.) Multiple select question. It lacks efficiency when combining large amounts of data from different sources. It requires expert judgment in the early stages of the process to make sure that results are meaningful. It can demonstrate how groups of tasks and qualifications linked to each other across jobs. It is not appropriate for jobs that are largely mental in character. It has multiple sources including interviews, task questionnaires,prior information, observation, and online databases