for A) no clue
B) true,
C)true
D)false
E)true , on book
F) true, on book
G) tricky, because i don't know what he means by important,...no clue
i tried different arrangements, and they were all falst: ABEF,BCEF,BCDEF.ABCEFG.ABCEF.BEF,BEFG, these are all wrong, panicing...