Selected financial information for MANGO Manufacturing is presented in the following table (000s omitted). Sales revenue Purchases of direct materials Direct labor Manufacturing overhead Operating expenses Beginning raw materials inventory Ending raw materials inventory Beginning work in process inventory Ending work in process inventory Beginning finished goods inventory Ending finished goods inventory What was operating income? $4700 $440 $520 $640 $730 $280 $230 $320 $430 $330 $260 O $3970 O $2360 O $2730 O $4700