On February 1, 2017, Aubrey Company sold its 5-year, $1,000 par value, 9% bonds, which were convertible at the option of the investor into Aubrey Company common stock at a ratio of 10 shares of common stock for each bond. Aubrey sold the convertible bonds at a discount. Interest is payable annually each February 1. On February 1, 2019, Mel Company, an investor in the Aubrey Company convertible bonds, tendered 1,000 bonds for conversion into 10,000 shares of Aubrey Company common stock, which had a market value of $110 per share at the date of the conversion. On May 1, 2019, Aubrey sold its 10-year, $1,000 par value, 10% nonconvertible term bonds dated April 1, 2019. Interest is payable semiannually, and the first interest payment date is October 1, 2019. Due to market conditions, the company sold the bonds at an effective interest rate (yield) of 12%. Required: Explain how Aubrey accounts for the conversion of the convertible bonds into common stock under both the book value and market value methods. Discuss the rationale for each method.