As you are asking more subject-specific questions, it would be helpful if you could post (future queries) to the more exam specific forums (student if you want a student to help or tutor if you want a tutor to answer).
Note that there are NO stand-alone in MCQs in the AA exam. This post has further advice on AA question practice.
You will find OT questions (as ACCA prefers to call them – rather than MCQs) in the CBE practice platform in the SPECIMEN exams and the PRACTICE exams (there are two for each exam) but recent past specimen questions are section C only for PM and section B only for AA (i.e. the “constructed response” parts of the exams).