20 points - Plz help

The diagram shows the graph of a parabola and it's key parts. What do you call point B in the diagram?
A) axis of symmetry
B) vertex
C) directrix
D) focus

20 points Plz help The diagram shows the graph of a parabola and its key parts What do you call point B in the diagram A axis of symmetry B vertex C directrix D class=