In May 2020, Mary began searching for a trade or business to acquire. In anticipation of finding a suitable acquisition, Mary hired an investment banker to evaluate three potential businesses, She also hired a law firm to begin drafting regulatory approval documents for a target company. Eventually, Mary decided to purchase all of the assets of Peterson Corporation. Peterson and Mary entered into an acquisition agreement on Decemeber 1, 2020. Identify the relevant tax issues for Mary.

Please make sure to explain well.