A and C
From what you have been posting I would say that a new fleet was the only viable option,but of course it needed to be planned and phased in before the whole situation got out of control !
Only MOD could have mishandled the aquisition of a simple glider fleet as badly as they seemed to have done,they never have seemed to grasp the idea that glider manufacturers are capable of designing gliders good enough for cadets to fly without expensive modifications LOL
Same happened with the motorfalke,G109 etc etc