Check my work mode: This shows what is correct or incorrect for the work you have completed so far. It does not indicate comp Selling, general, and administrative expenses were $99,000, net sales were $460,000; interest expense was $10,500; research and development expenses were $47,200, net cash provided by operating activities was $118,800; income tax expense was $11.400: cost of goods sold was $247,500. Required: a. Calculate operating income for the period. Answer is not complete. OO $ 460.000 (247.500) 212,500 Net sales Cost of goods sold Gross profit Operating expenses: Interest expense Income tax expense Operating income 10,500 11,400 b. Calculate net income for the period. Answer is not complete. b. Calculate net income for the period. Answer is not complete. Interest expense Income tax expense 10,500 (10,500) 11,400