I need help with this accounting question. Please show all work, thank you!

Lake Coffee Company reported net sales of $$180,000,$ net income of $$54,000,$ beginning total assets of $$200,000,$ and ending total assets of $$300,000.$ What was the company's asset turnover?

a$.0\mathrm{.}90$ times

b$.0\mathrm{.}20$ times

c$.0\mathrm{.}72$ times

d$.1\mathrm{.}39$ times