A machinery was bought on 2^nd January 2015 for $ 90,000, The Company depreciates its PP&E at 10% on cost with no depreciation during the year of disposal. The machinery was sold on 1^st July 2019 for $60,000. What was the gain or loss on disposal?

A. Loss of $ 30,000

B. Gain of $ 30,000

C. Loss of $ 6,000

D. Gain of $ 6,000