Consider the following tree. Which sequence is the result of an postorder traversal?

a

$/\backslash$

h j

$/\backslash /\backslash$

d e f g

$///\backslash$

b i c k

Question $7$ Select one:

a$.$

kgcjfeihdba

b$.$

ahdebijgck

c$.$

bdiehckfgja

d$.$

kigfjebcdha