Hi again, I'm pretty sure about the 3=PS being suit and not suite, because I've seen another version of this quiz with the answers already provided... good job, though, Jansy on all the others!!!!
I'll take a guess at the 5 = E. It might be 5 = Excellent: many systems use "5 stars" to represent an excellent quality rating, for example, travel guides rating the quality of hotels and restaurants on a scale of 1 to 5, and Amazon.com's ratings for service, when you purchase a book from a third-party seller. There, five is the best rating something can receive.