Non-cause management refers to managing affairs for others without being delegated and unable to determine or agree on obligations. According to the above definitions, Which of the following are attributed to cause-free management:. ['At the request of A. B takes his 6-year-old child to the beach to play, and the child accidentally falls into the water, B rescues him.', "A and B are neighbors. A goes out to work. In order to avoid the typhoon's collapse of A's old house, B recruits and repairs the house.", "A's horse is lost. After B picks up the horse and finds the owner of the horse unsuccessful, he keeps it in his own home. Hou A finds B and retrieves the horse.", 'The fish raised by Jia is at the time of sale. A suddenly goes out due to urgent matters. When B sees that A is absent, he sells the fish he raised. After A returns, deduct the cost of sales and give the remaining money to A.']