Balance Sheet (Millions of $ ) 2021$4,20017,50020,300$42,00028,000$70,000 Liabilities and Equity Other data: \begin{tabular}{lr} \hline Shares outstanding (millions) & 500.00 \\ Common dividends (millions of \$) & $1,249.50 \\ \hline Int rate nn nntes navahle \&. I _T hnnds \end{tabular} What is the firm's return on invested capital? Do not round your intermediat a. 26.09% b. 16.73% c. 11.86% d. 18.60%