The transfer of the right to use the asset refers to the behavior of the owner of the asset temporarily transferring the right to use the asset to others in order to obtain relevant benefits, but does not transfer the ownership of the asset. According to the above definitions, Which of the following are not transferable asset use rights:. ['A domestic company contracted the cleaning of an office building for 30 yuan per square meter per month.', 'A city commercial bank issues a loan of 200 million yuan to a company at an annual interest rate of 6.8%.', 'A university rents an idle office building to a vocational training school for 500,000 yuan per year.', 'An enterprise is responsible for the construction of a smart city in a city by using an independently developed operating system at a price of 50 million per year.']