The simplicity of being out there

You'll have to excuse my noob-ness to Trek lore here, but... Whatever happened to the 1701-A and 1701-B? I know the NX-01 became a museum ship, and the original 1701, as well as 1701-C and D were destroyed. The 1701-E is... Well we may never know what became of her after Nemesis, sadly(then again maybe the new series will shed some light on her current status?)... Assumption would tell me that the A and B simply lived out their service lives before they were ultimately sent to the scrap yards?