No it wouldn't necessarily. Especially if the A is being looked at to fulfil a completely separate set of requirements for the Air Force. A is lowest cost per frame so you get more jets for your budget. There'll never be interop for UK QEC and the C model as we will never get cats and traps. So the A would make total sense. Why carry all that additional weight around for the C when you can't use it 90+% of the time?