To perform a Life Cycle Analysis of a material or entire structure you must. (select all appropriate answers) Select one or more: a. Define the scope or System Boundary for your project b. Determine which impacts you want to measure c. Eliminate from consideration materials that are deemed too environmentally harmful d. eliminate from consideration all materials that have to be shipped more than 500 miles e. Make an inventory of the materials and processes involved 9 f. Accept the manufacturer's product declarations at face value for all impacts