Darryl Kerrigan is the director of DK Pty Ltd, which is a property investment company in Sydney and the company is registered for Goods and Services Tax (GST). Due to the COVID-19 impact, DK Pty Ltd has decided to rent out their twenty (20) existing office units that they finished in a building project in February 2020. To negotiate rental contracts, DK Pty Ltd employs a property lawyer, Mr. Dennis Denuto. Dennis is a busy lawyer and his practice income is $300,000 per year. DK Pty Ltd offered Dennis a rent-free office in the city of Sydney in exchange for his service to DK Pty Ltd. The market rental value of the office provided to Dennis is $38,000 per year. Required: Advise of the GST obligations and the input tax credit of this arrangements to DK Pty Ltd and Mr. Dennis Denuto.