A Retailer Purchased a Delivery Wagon for $21 000 on 1

Multiple Choice

A retailer purchased a delivery wagon for $21 000 on 1 July 2010.It was planned to keep the vehicle until it had done 60 000 kilometres and then to trade it in.The expected trade in value was $6 000.
Schedule of actual distance travelled was: $$\begin{array} { l l } 30 / 6 / 11 & 20000 \mathrm {~km} \\30 / 6 / 12 & 15000 \mathrm {~km} \\30 / 6 / 13 & 15000 \mathrm {~km} \\30 / 6 / 14 & 10000 \mathrm {~km}\end{array}$$
Using the units-of-production method the amount of depreciation charged for the year ended 30 June 2014 was:

A) $3750
B) $3500
C) $2500
D) $5000