Question 3. The Presumption of Merger. Which of these claims by a buyer arising from a real state purchase and sale contract would presumptively be merged in the deed? (1) Seller's failure to comply with building code in making tenant improvements; (2) long-term unrecorded lease of a tenant in possession; (3) seller's two-year warranty of air conditioning system; (4) unpaid balance of seller's debt on its original purchase money deed of trust, never released of record; (5) unpaid property taxes accruing during seller's period of ownership