$ 16,800 is the collector’s value of ______.
A. the One Penny Orange-Red
B. a correctly printed’1847 stamp
C. the Two Penny Blue
D. both A and C
正确答案：C
此题为细节题从文中最后一段最后一句BecauseoftheTwoPennyBlue’srarenessandage；collectorshavepaidasmuchas$16800forit可知被高价收藏的是TwoPennyBlue原因是这种邮票非常稀少总共才只有12张故D为正确答案
