Check my answer in bold .

he following is an incorrect flowchart proving that point l, lying on line lm which is a perpendicular bisector of segment jk, is equidistant from points j and k:

what is the error in this flowchart?

select one:
a. jl and kl are equal in length, according to the definition of a midpoint.
b. the arrow between δjnl ≅ δknl and segment j l is congruent to segment k l points in the wrong direction.
c. an arrow is missing between the given statement and ∠lnk ≅ ∠lnj..
d. triangles jnl and knl are congruent by the side-angle side (sas) postulate.

i am stuck between answer "b" and "d", but im leaning towards answer "d".