Due to work needs, a certain unit decided to select 4 people from its unit (Xiao Wang, Xiao Li, Xiao Sun) and 5 men (Xiao Zhang, Xiao Jin, Xiao Wu, Xiao Meng, Xiao Yu) to set up negotiations. The group participates in an important negotiation, and the selection conditions are as follows: (1) The group members must have both women and men. (2) Xiao Zhang and Xiao Wang cannot be selected. (3) Xiao Li and Xiao Sun cannot be selected.4) If you choose Xiaoyu, don't choose Xiaowu. If Xiao Zhang must be selected, which of the following can be obtained? ? ['If you choose Xiao Wu, choose Xiao Yu.', 'If you choose Xiaojin, choose Xiaomeng.', 'Either Xiaoyu or Xiaomeng.', 'Either Xiaoli or Xiaosun.']