ABC is an isosceles triangle
$\mathrm { D } \in [ \mathrm { BC } ] , \mathrm { B } \in [ \mathrm { AE } ]$
$| \mathrm { AB } | = | \mathrm { BC } |$
$| \mathrm { AC } | = | \mathrm { AD } | = | \mathrm { DE } |$
$\mathrm { m } ( \widehat { \mathrm { ADB } } ) = 111 ^ { \circ }$
$m ( \widehat { B D E } ) = x$
Accordingly, how many degrees is $x$?
A) 15
B) 18
C) 21
D) 24
E) 27