If anything, it's a Backronym, which makes its inclusion in your quiz a poor choice. If you must include it, call it what it is, and don't try to make it look like the name Perl was an artifact derived from a chosen longhand phrase.

Which "good university" has documents stating that Perl is intended to be an acronym?

Before you start telling people to refer to Wikipedia or some vague university's "documents", you should RTFM, or in this case, RTFFAQ: perlfaq1: What is the difference between perl and Perl?. I won't cut-and-paste it here, but you will find that the Perl documentation disputes your assertion.

While you're at it, you can confirm my JAPH comment here: perlfaq1: What is a JAPH?