How do I answer what type of HDHP coverage I had? I worked part of the year and had my own HDHP and went to school part of the year and was covered by my parent's HDHP?

I was covered under my own HDHP through my employer for 9 months while I was working full-time and contributed to an HSA. During that time I was "double covered" under my parent's HDHP because I was under 26. The last 3 months of the year I attended school and no long worked and so was covered only under my parent's HDHP. How do I figure the questions on the "Type of HDHP" page where I am asked if I had "Self Only, Family Plan, or None" coverage?