A) -B E G D F Consider the following graph. Below the graph are 8 possible node orderings. Which of these node orderings form a topological sort of the graph? Select all that apply. (Note: There may be other possible topological sort orderings that are not listed here.) 1) GABDCEF 2) AGBDCEF U U 3) ABDGCEF ) 4) ABCGDEF U 5) GABCDEF 6) GDEABCF 7) AGBCDEF |_) 8) ABGDCEF