Which of the following is not true about the hydration capacity of proteins?

A、WhenpH=pI,thehydrationcapacitymaximizes;
B、Whentemperaturerises,thehydrationcapacitydrops;
C、Whentherearemorepolar/chargedaminoacidsintheproteinchain,thehydrationcapacityincreases;
D、Addingsaltatlowconcentrationenhanceshydrationcapacity