The author's report on how the social class of buyers influences the success of marketing strategies contained no exact and several imprecise and different definitions of social class.

(A) contained no exact and several imprecise and different definitions of social class

(B) contained no exact but varying imprecise and different definitions of social class

(C) contained no exact definition but several imprecise and different characterizations of social class

(D) failed to contain any exact definitions of social class, but varying imprecise and different ones

(E) failed to define social class in any exact way but used varying imprecise and different ones
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