This month your vendor invoiced $59,750 in testing charges for your production run. The unit cost for testing is twice as much for each of the first 519 units per month as compared to each unit over 519. If we shipped 734 units to the vendor this month, find: (Round your answer to the nearest integer.) A) Average cost per unit $ 1. B) Cost per unit below the price break point $0. C) Marginal cost for the 683th unit $