ABCD is a parallelogram in which \[-D\,\,DAB={{75}^{\text{o}}}\] and \[-D\,DBC={{60}^{\text{o}}}\] then \[-DCDB=\]???.

ABCD is a parallelogram in which \[-D\,\,DAB={{75}^{\text{o}}}\] and \

1.	ABCD is a parallelogram in which \[-D\,\,DAB={{75}^{\text{o}}}\] and \[-D\,DBC={{60}^{\text{o}}}\] then \[-DCDB=\]???.
A.	\[60{}^\circ \]
B.	\[75{}^\circ \]
C.	\[45{}^\circ \]
D.	\[135{}^\circ \]
Answer» D. \[135{}^\circ \]