We need a function guess in Scheme that has the following behaviour:$>($guess $\text{'}(1234)\text{'}(12))(12)>($guess $\text{'}(1234)\text{'}(1234567))(1234)>($guess $\text{'}($a b c d$)\text{'}(1234))()$One of the following definitions allows such behaviour. This definition is:We need a function guess in Scheme that has the following behaviour:$>($guess $\text{'}(1234)\text{'}(12))(12)>($guess $\text{'}(1234)\text{'}(1234567))(1234)>($guess $\text{'}($a b c d$)\text{'}(1234))()$One of the following definitions allows such behaviour. This definition is:$($define $($guess l$1$ l$2)($cond $(($null$?$ l$1)())(($null$?$ l$2)())(($equal$?($car l$1)($car l$2))($cons $($guess $($car l$1)($car l$2))($guess $($cdr l$1)($cdr l$2))))($else $())))1.($define $($guess l$1$ l$2)($cond $(($null$?$ l$1)())(($null$?$ l$2)())(($equal$?($car l$1)($car l$2))($append $($car l$1)($guess $($cdr l$1)($cdr l$2))))($else $())))2.($define $($guess l$1$ l$2)($cond $(($null$?$ l$1)())(($null$?$ l$2)())(($equal$?($car l$1)($car l$2))($cons $($car l$1)($guess $($cdr l$1)($cdr l$2))))($else $())))3.($define $($guess l$1$ l$2)($cond $(($null$?$ l$1)())(($null$?$ l$2)())(($equal$?($car l$1)($car l$2))($append $($guess $($car l$1)($car l$2))($guess $($cdr l$1)($cdr l$2))))($else $())))$