The modification of possession means that when the right to the movable property is transferred, and the two parties have agreed that the transferor will continue to possess the movable property, the real right will become effective when the transfer agreement becomes effective. According to the above definition, which of the following is changes in possession? ['A sells the furniture he leased to B, but because the lease period has not expired, the furniture cannot be recovered for the time being, A transfers the right to return the furniture to B.', 'The mall staff accidentally broke the camera rented by the TV station during use. The mall purchased the camera at the original price.', 'A sells his house to Tenant B, and completes the transfer formalities. Because B went back to his home to handle the matter, he did not check in temporarily, so A continued to live in the changed house.', 'A sells all of his own set of books to B. When delivering the book, A still wants to see it for a while, and then reaches an agreement with B, borrowing the book for 15 days, B agrees.']