Gift contract: A contract in which one party of a contract gives his property to the other party for free. The party giving the property is the donor and the party receiving the property is the recipient. Based on the above definition, which of the following is actions that may form a gift contract? ['A will provide his own residence to friends B for free while studying abroad.', 'A gives her own chicken farm to the son-in-law who promised to give her own care.', 'A invites B to run his own company and give the other party 80% of the shares.', 'A computer dealer gave 15 new computers to his alma mater during the school celebration.']