Question 17 (1 point) Which of the following uses of a dwelling unit does not count as personal use? 1) The taxpayer's parents use the unit for two weeks and pay a fair rental price. 2) The dwelling is rented to a friend for less than a fair rental price. 3) The taxpayer stays at the dwelling while working full-time to replace the roof. 4) All of the above count as personal use. 5) None of the above count as personal use