The 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?

a. an arrow is missing between ∠lnk = 90° and ∠lnj = 90° and ∠lnk ≅ ∠lnj.

b. jl and kl are equal in length, according to the definition of a midpoint.

c. an arrow is missing between the given statement and ∠lnk ≅ ∠lnj.

d. point l is equidistant from points j and n, not j and k.