Douglas Dynamics is an industrial machinery company based in Milwaukee, Wisconsin, that makes snowplow blades, large snowplows, and salt spreaders. In its MD&A, management lists the following risks that can affect the financial performance of the company. Which is relevant if you own a large portfolio? I. Low snowfall II. Rising steel prices III. The loss of a large customer IV. A change in road de-icing technology O a. I only O b. I and II only OC. I, II, and IV only Od. All of the above. Oe. None of the above