In the Textbook It Was Discussed How the Melting Point

In the textbook it was discussed how the melting point is decreased and the boiling point is elevated for a solvent with a solute in it. What happens to the triple point of that solvent? Does the triple point

A) remain at the same pressure and temperature?
B) stay at the same pressure, but warmer temperature?
C) stay at the same pressure, but cooler temperature?
D) occur at a lower pressure and temperature?
E) occur at a higher pressure and temperature?