Wills Welded Widgets (WWW) makes its Q Model from components R, S, and T. Component R is

Question:

Will’s Welded Widgets (WWW) makes its Q Model from components R, S, and T. Component R is made from two units of component X and one unit of component Y. Component T is made from one unit of component V and three units of component Z.
Draw the product structure tree for the Q Model.