There is one or multiple answers.

After deleting node 1 , which of the new transitions are correctly calculated. A. new(s,f)=a B. new(s,f)= C. new (s,2)=a(a+b) D. new(s,2)=+a(a+b) E. new (s,2)=a(a+b)b F. new (2,f)=ba(a+b) G.new (2,f)=b