Just want to know how to calculate this answer. Thanks

A. $2,110 B. $4,300 C. $3,600 D. $2,720

Selected financial information for Shadyside 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? $2;110 $2;720 $4,300 S460 S480 S660 S700 S230 S270 S350 S510 S310 S220