The given figure shows \[\Delta ABC\] & \[\Delta DBC,\] \[AB=DB\]and \[CA=CD\] What is the measure of \[\angle DBC\]?

• A.  \[115{}^\circ \]          
• B.  \[100{}^\circ \]          
• C.  \[150{}^\circ \]  
• D.  \[155{}^\circ \]