What is \(\left[ {{\rm{x\;\;y\;\;z}}} \right]\left[ {\begin{array}{*{20}{c}} {\rm{a}}&{\rm{h}}&{\rm{g}}\\ {\rm{h}}&{\rm{b}}&{\rm{f}}\\ {\rm{g}}&{\rm{f}}&{\rm{c}} \end{array}} \right]\) equal to?

• A. [ax + hy + gz h + b + f g + f + c]
• B. \(\left[ {\begin{array}{*{20}{c}} {\rm{a}}&{\rm{h}}&{\rm{g}}\\ {{\rm{hx}}}&{{\rm{by}}}&{{\rm{fz}}}\\ {\rm{g}}&{\rm{f}}&{\rm{c}} \end{array}} \right]\)
• C. \(\left[ {\begin{array}{*{20}{c}} {{\rm{ax}} + {\rm{hy}} + {\rm{gz}}}\\ {{\rm{hx}} + {\rm{by}} + {\rm{fz}}}\\ {{\rm{gx}} + {\rm{fy}} + {\rm{cs}}} \end{array}} \right]\)
• D. [ax + hy + gz hx + by + fz gx + fy + cz]