Sources for explore

Just clarifying:

I thought that all sources used had to be within the academic year (July 2018 onwards).
However the AP CSP Assessment Overview document states:

At least two of the sources must have been created after the end of the previous academic year

Anyone else have this confusion? Or have thought/been told conflicting information.

I’ve been told “at least two out of three” in several different situations. I actually found that many of my students last year ended up using more than three sources and mostly ended up with all of them being in the last academic year but for some they did need/want to reference an older source.

Thank you. That sounds about the same as what I have been told/seen.

I thought during my summer AP conference that they said ALL sources, but I may have misheard or made the note incorrectly.