In the diagram, the length of Line segment Y Z is twice the length of Line segment A Z. Triangle X Y Z is shown. Angle X Y Z is a right angle. An altitude is drawn from point Y to point A on size Z X to form a right angle. Line segment Y A is an altitude of ΔXYZ. What is the length of Line segment Y A? 5 StartRoot 3 EndRoot units 10 StartRoot 3 EndRoot units 15 units 20 units