_______their　differences，the　couple　were　developing　an　obvious　and　genuine　affection　for　each　other．

1. A.
   But　for
2. B.
   For　all
3. C.
   Above　all
4. D.
   Except　for

＿＿their　differences，the　couple　were　developing　an　obvious　and　genuine　affection　for　each　other．

A)But　for?     B)For　all?     C)Above　all?     D)Except　for