Explanation of Responses:

This statement is jointly filed by Mario Investments LLC, Cornell Capital entities, and Henry Cornell. Mario directly owns shares of the 6.50% Series A Convertible Perpetual Preferred Stock, while the others are indirect owners. Mr. Cornell is a director of the Company, and following a recent transaction, only he retains equity interests. The Series A Preferred Stock is convertible into Common Stock at a specific rate. Mario agreed to sell 363,000 shares under a Repurchase Agreement for approximately $361 million, plus accrued dividends. The filing is amended to include signatures omitted previously.

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