In 2016, Caterpillar Inc. reported the following (in millions): Current Assets Lont-term Assets Current Liabilities Total Liabilities $31,967 $42,737 $26,132 $61,491 What amount did Caterpillar report as equity in 2016? Select one: A. $36,721 million B. $13,213 million C. $84,896 million D. $17,457 million E. None of the above