On producing a side of a triangle, the exterior angle so formed is \[128{}^\circ \]. If the interior opposite angles are in the ratio \[\mathbf{1}:\mathbf{3},\]then find the measure of the difference of greatest angle and the least angle of the triangle.

• A. \[35{}^\circ \]
• B.  \[58{}^\circ \]
• C.  \[23{}^\circ \] 
• D.  \[28{}^\circ \]
• E.  None of these