40. In the movie The Bridges of Madison County, the director takes time to weave a melancholic impact upon the viewers who, ___________, moved by the subtle and delicate emotional changes of a plain housewife and the romantic tone created with music, candlelight, tight embraces, and understanding talks and smiles between her and the photographer, believe this is true love in middle-age.
(A) little by little (B) day by day (C) out of the blue (D) out of thin air