At January 1, 2016, Whooping Crane Company had total assets of $3,600,000 and at December 31, 2016, its total assets were $4,400,000. Whooping Cranes net sales for 2016 were $3,400,000 and its 2016 net income was $240,000. Whooping Cranes return on assets for 2018 is:

Select one:

A. 5.5%

B. 6.0%

C. 85.0%

D. 6.7%

The answer is B but I don't know why so I hope someone to explain why