Horizon Cellular manufactures cell phones for exclusive use in its communication network. Management must select

a circuit board supplier for a new phone soon to be introduced to the market. The annual requirements $($D$)$ are

$40,000$ units and Horizon's plant operates $250$ days per year. The data for three suppliers are in the following table.

i

Which supplier and shipping quantity will provide the lowest total cost for Horizon Cellular? please write final answer in the same sentence format as in the bottom of the image.