for number 2 , i keep getting choice 3 ,  abdcefghi . what was the answer?

i got

starting at a ,

paths to b and d

so , output is a b d     so far

now we look at b, b has paths to c ,e ,d

so now output is, abdce

now looking at d , paths are e,f

now output is , abdcef

now we look at f , f has paths to g and h

now output looks like , abdcefgh

now we look at g , g has paths to i

so now output is abdcefghi