P is a hydrated metal salt that is blue in colour. On heating P, water is released and solid Q remains. R is a hydrated metal salt that is pink in colour. On heating R, water is released and solid S remains. Which row states the name of P and the colour of S?
- Ahydrated cobalt(II) chloride, blue
- Bhydrated cobalt(II) chloride, white
- Chydrated copper(II) sulfate, blue
- Dhydrated copper(II) sulfate, white