Which of the following is not one of Laseter's principles of cost modeling? Question 2 options: 1) Focus on cost drivers, not just cost elements 2) Triangulate across data sources 3) Start with the most complex model you can, and simplify it to fit the situation 4) Always consider total cost of ownershipFrom a supplier's perspective, which of these is a rationale for offering a lower price in return for larger volume? Question 3 options: 1) He can spread his variable cost over a larger number of units sold 2) He can accept a smaller profit per unit because with higher volume, he will have a higher total profit 3) His key concern is total revenue, so it's always worthwhile to add to total volume 4) His fixed costs will increase, but not in proportion to the increase in volume