The Michigan Corporation owns 20% of the Wolverine Corporation. The Wolverine stock was acquired eight years ago to ensure a steady supply of raw materials. Michigan also owns 30% of Spartan Corporation and 85% of Huron Corporation. Stock in both corporations was acquired more than ten years ago for investment purposes. During the current year, Wolverine, Spartan, and Huron are deemed bankrupt, and the stocks are considered worthless. Describe how Michigan should treats its losses.