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Current Attempt in Progress The following information is available for Marin Company at December 31, 2020, regarding its investments. Securities Cost Fair Value 600 shares of Runner Corporation common stock $26,000 $41,000 7,600 shares of Sher-tor Corporation preferred stock 622,000 590,000 $648,000 $631,000 (a) Prepare the adjusting entry (if any) for 2020, assuming the securities are classified as trading. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter Ofor the amounts.) (b) Prepare the adjusting entry (if any) for 2020, assuming the securities are classified as available-for-sale. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter Ofor the amounts.) Account Titles and Explanation Debit Credit e Textbook and Media List of Accounts Save for Later