A small block slides down a frictionless track whose shape is described by y $=($x$^2)/$d for x$<0$  and by y $=-($x$^2)/$d for x$>0.$ The value of d is $2\mathrm{.}88$ m$,$ and x and y are measured in meters as usual. Suppose the block starts from rest on the track, at x $=-1\mathrm{.}67$ m$.$ What will the block s speed be when it reaches x $=0?$

Question $6$ options:

$4\mathrm{.}36$ m$/$s

$3\mathrm{.}08$ m$/$s

$1\mathrm{.}23$ m$/$s

$5\mathrm{.}23$ m$/$s