As doc said, folks can give multiple answers to the same questions, depending on who's doing the asking, where, when, and how. I demonstrated this concept to one of my students, He asked a patient if they had any medical problems, and began to list possibilities- cardiac, high blood pressure, asthma, etc. The patient dutifully replied, no to all. I smiled, then asked the patient what medications he takes every day and he replied with a laundry list. My student was flustered, but wrote them all down. Then I smiled and asked the patient- already knowing the answer I would get from him: "So- you are taking all these pills for your heart, your sugar, and your asthma, why did you say you didn't have any of these problems?" The patient: -looking at me like I was a complete moron: "Because I DON'T have those problems as long as I'm taking those medications."
I looked at the student, his jaw dropped and he just shook his head. It was the easiest lesson I ever taught. LOL