Taxpayer purchases a partnership interest for $10,000 in an arm's length transfer. Costs of the acquisition are $5,000. The selling partner has basis in her partnership interest of $3,000. The partnership has basis in it's assets of $5,000. The fair market value of the purchased interest is $11,000. Based on this data, what is Taxpayer's outside basis in his partnership interest immediately after the purchase? 15,000 11,000 30,000 5,000