Itwasthebelief_________hecouldfindhis"root"inAfrica_______madeAlexHaleydecidetogotoGambia．（）A.that；whereB.where；thatC.that；thatD.how；which

　　It was the belief _________ he could find his"root"in Africa _______ made Alex Haley decide to go to Gambia．（）

　　A.that； where

　　B.where； that

　　C.that； that

　　D.how； which