Parent A is bathing 14 month old baby who is playing happily in the bath.
Parent B asks to swap as they need the toilet.
Parent B sits on the toilet on their phone doing some work whist right in front of the baby happily playing in the bath.
Parent A goes to get on with some house work.
Parent B, after approx 7 mins, shouts to parent A that the bath is freezing and the baby is really cold.
Parent A thinks that this is Parent B's fault as they should keep checking the temperature and it was their responsibility.
Parent B thinks that Parent A must have had the bath too cold in the first place and that it is their fault.
Who's in the right?