On 1 April 2014, Godfrey inherited a property in Causeway Bay, Hong Kong from his late father. It had been leased by his late father to an old man, Benny, for over 20 years. The monthly rent was $10,000. Benny was responsible for paying rates $900 per quarter and building management fees $1,000 per month. Since 1 December 2018, Benny disappeared and Godfrey did not receive any rent from Benny. On 5 June 2019, Godfrey was informed that Benny had been hospitalized and passed away on 31 May 2019. Benny did not pay any rental deposit because he had been a good tenant for many years. The assessor agreed that the outstanding rent was irrecoverable from Dec 2018 to May 2019 in the year of assessment 2019/20. Godfrey took possession of the property on 15 June 2019. Godfrey was able to find a new tenant, Daniel. The new lease commenced on 1 August 2019 with a monthly rent of $15,000. Godfrey paid $50,000 to decorate the property. Daniel paid Godfrey 2-month rental deposit which was refundable upon expiry of lease and 1-month rent in advance on 31 July 2019. In the tenancy agreement, Godfrey was responsible for repairs and maintenance of the property and also the rates $900 per quarter (see note) and building management fee $1,000 per month (payable to the property management company). Note: Rates concession was given to all ratepayers to offset the rates payable for the four quarters from April 2019 to March 2020, subject to a ceiling of $1,500 per quarter for each ratable period. Required: Compute Godfrey's Property Tax for the years of assessment from 2017/18 to 2019/20. Ignore provisional Property Tax. Show all your workings. Explain tax treatments on (1) $50,000 decoration fee (2) refundable 2-month rental deposit.