I used B. Its stiffer and harder to work with, but I read that when used in chlorinated water it doesn't leach chemicals as bad as Pex A. Having said that, keep in mind that all pipes leach chemicals.

Old Turd- Deplorable- Unrepentant Murderer- Domestic Violent Extremist

Just "Campfire Riffraff and Trash"

This will be my last post! Flave 1/3/21