Salvadore Inc., a local retailer, has provided the following data for the month of September:
Merchandise inventory, beginning balance $ 49,500Merchandise inventory, ending balance $ 42,900 Sales $268,500 Purchases of merchandise inventory $138,700 Selling expense $ 18,800 Administrative expense $ 53,800
The net operating income for September was:
a) $50,600
b) $130,800
c) $129,800
d) $48,300