A $x = array(ʺaʺ => ʺbʺ, ʺcʺ => ʺdʺ); foreach ( $x as $y ) { echo $y ;}
B $x = array(ʺaʺ => ʺbʺ, ʺcʺ => ʺdʺ); foreach($x as $key => $value){ echo $key; }
C $x = array(ʺaʺ => ʺbʺ, ʺcʺ => ʺdʺ); foreach($x as $key => $value){ echo $value; }
D $x = array(ʺaʺ => ʺbʺ, ʺcʺ => ʺdʺ); foreach($x as $key => $value){ echo $key.$value; }
E $x = array(ʺaʺ => ʺbʺ, ʺcʺ => ʺdʺ); foreach($x as $key => $value){ echo $x; }