A1,2,4 and A3 A5 A6 are very Different Class !
I think A3 A5 A6 were developed from ICBM technology . There has been many reports Claiming the 5000+ range for A3 , 8000 K Range for A5 , 10000Km for future A-6 ( Surya)
We might be down playing the real distance for many reasons .
A4 is 17...