IMO C3 is correct which was further clarified by Kurnal but it doesn't address the situation about the right to know about the FRA by Relevant Persons. However if you consider who Relevant Persons are, not only tenants but friends of friends visiting tenants, customers in a shop or departmental store and even passer by, then I can see why legislators kept well away from that can of worms.
"relevant persons" means-
(a) any person (including the responsible person) who is or may be lawfully on the premises; and
(b) any person in the immediate vicinity of the premises who is at risk from a fire on the premises,
but does not include a fire-fighter who is carrying out his duties in relation to a function of a fire and rescue authority under section 7,
8 or 9 of the Fire and Rescue Services Act 2004 (fire-fighting, road traffic accidents and other emergencies), other than in relation to a
function under section 7(2)(d), 8(2)(d) or 9(3)(d) of that Act;