a$)$ Examine the data in the tables below for two competing window manufacturers and compare them from a revenue retrieval point of view.

PG Glass

$\backslash$table$[[$Part$,\backslash$table$[[$Resale$],[$Revenue$],[$per Unit$]],\backslash$table$[[$Recyclin$],[$g$],[$Revenue$],[$per Unit$]],\backslash$table$[[$Processin$],[$g Cost per$],[$Unit$]],\backslash$table$[[$Disposal$],[$Cost per$],[$Unit$]]],[$Glass$,$$$12,$$$10,$$$6,$$$2$