【单选题】

An excellent philatelist can detect a forged ------- with a single glance, for a true specimen bears markings and characteristics, without exception, that the ------- invariably lacks.
A．(A) painting … imitation

B．(B) insect … approximation
C．(C) coin … original
D．(D) stamp … facsimile
E．(E) treatise … falsehood