A plant manager at a commercial bakery is evaluating frames of bread racks from two different suppliers. Supplier A has engineered its frames to accommodate an extra rack, without altering the frame's overall dimensions. With this extra rack, the bakery's daily production costs would be reduced by $5\%.$ With Suppler B$\text{'}$s racks, the bakery's daily production costs would not change. When the plant manager evaluates the two competing suppliers' frames, the manager would be using which method to determine the differentiation value of a frame having the extra rack?

Tradeoff$-$measurement approach

Savins$-$expenditure approach

Negative differentiation value

Parity pricing

Value to the consumer