Tom775257...
I found this in UK AAIB report, this doesn't agree with your point (b):
Aircraft information. The Airbus A321 entered service in 1994. The aircraft has a longer fuselage than the A320 and different tailstrike geometry. The manufacturer advises that, with the main gear oleo fully compressed and wings level, the pitch attitude limit for the A321 is 9.7° and for the A320 it is 11.7°.
Or are you saying your airline applies the pitch of 9.7 across the A319/A320/A321 as that would seem the seem the sensible approach.
The AAIB report can be found at:
https://assets.publishing.service.go...EUXF_07-16.pdf