Your client, Envirocosmetics, recently has filed for bankruptcy. In the course of bankruptcy proceedings, you (a) prepare a plan of reorganization that alters the rights of preferred stockholders, (b) notify the Envirocosmetics’ creditors of an impending bulk transfer of the company’s assets, (c) review IRS secured claims against these assets, (d) restructure the company’s debt by reducing its principal amount and extending its maturity, (e) advise the bankruptcy court as to how this restructuring will impact the company’s NOLs. Which of these activities, if any, constitutes the unauthorized practice of law?