Sabrina owns an apartment complex in upstate New York. One of her renters, Salvo, informs her in January that the heating unit has stopped working in his apartment. Sabrina promises to fix the problem, but two weeks later, the heating unit is still not working. Salvo may: move out, but may pay rent at a reduced rate. stop paying rent, but may not move out. have to fix the problem himself because landlords have no responsibility to repair heating units. vacate the apartment, and Sabrina will be liable for any expenses he incurs