ABC Co$.$ purchased $100$ shares of DEF Inc., a privately held company on January $1,20$x$3.$ ABC Co$.$

purchased these shares to utitize some extra cash and plans to hold onto them for severat years. ABC Co$.$

privately held and reports under ASPE.

ABC Co's controller has asked for your assistance in completing the year$-$end accounting for this

investment. He would like to know what ABC's options are for accounting for its investment in DEF Inc.