WAEC Financial Accounting 1992 Question 41

Rufai, a vulcaniser bought 4 machines for ₦20,200 and incurred the following expenses for the year ended 31st December, 1990
Glue: ₦2,100
Thread: ₦600
Kerosine: ₦900
Rubber: ₦558
Matches: ₦110
He received ₦5,772 from customers. Two machines were later sold for ₦6,990 and ₦5,670 respectively.

What is his revenue expenditure?

1. A.₦24,468
2. B.₦20,200
3. C.₦4,268
4. D.₦3,600
5. E.₦2,810.