whEn thE Author usEs thE ExprEssion "it is A long shrug" in rEFErring to BowlEs's Book, hE is CommEnting on thE ______.
A．lEngth oF thE novEl
B．inDiFFErEnCE to thE morAl BEhAvior oF thE ChArACtErs
C．monotony oF thE story
D．sEnsAtionAl DEprAvitiEs oF thE Book