In the given figure AE=BC and AE || BC and the three sides AB , CD and ED are equal in length , If $\;m \angle{A}=102^{0}C\;$ , find the measures of $\;\angle{ABC}\;$ :

Question

$(a)\;138^{0}C\qquad(b)\;162^{0}C\qquad(c)\;88^{0}C\qquad(d)\;None\;of\;these$