On 31 December 2016, a new machine with a useful life of 6 years and an estimated residual value of $2,000 was purchased by a business at a cost of $35,000. The amount of depreciation expense charged for the year ended 31 December 2018, using the reducing-balance method at a rate of 30% per annum, is?

a. $9,900

b. $7,350

c. $7,530

d. $10,500