The Moon Under Water is a pub in Manchester city centre, in the building of the former Deansgate Picture House cinema on Deansgate. The pub, which is 8800 sqft and can hold 1,700 customers has been noted by the "Guinness Book of Records" as being the largest in Britain. Other sources claim it is the largest in Europe.

Based on that paragraph can we conclude that this sentence is true?
Not all sources claim the pub is the largest in Europe.

OPTIONS:
[I] Yes
[II] It's impossible to say
[III] No
[I]