A phase diagram of water is shown at the end of this problem. Label the regions. Predict

Question:

A phase diagram of water is shown at the end of this problem. Label the regions. Predict what would happen as a result of the following changes:
(a) Starting at A, we raise the temperature at constant pressure.
(b) Starting at C, we lower the temperature at constant pressure.
(c) Starting at B, we lower the pressure at constant temperature.