The following information relates to a computer shop owner who makes all purchases oncredit:

at 31.12.2010

at 31.12.2009

Inventory/Stock

10,600

10,300

Trade Receivables/Debtors

5,400

4,800

Trade payables/Creditors

5,900

6,300

Transactions during 2010:

Amount received from trade receivables/debtors

127,600

Amount paid to trade payables/creditors

93,200

Cash sales

23,200

Discount allowed to trade receivables/debtors

2,400

Bad debts written off

800

Increase in allowance/provision for doubtful debts

250

Refunds received from trade payables/creditors

80

The gross profit earned by the computer shop owner during 2010 was:

a.38,820

b.38,870

c.61,750

d.62,180