A．the One Penny Orange-Red B．a correctly printed'1847 stamp C．the Two Penny Blue D．both A and C
单项选择题The best title for this selection is （）
A．The "Post Paid" Error B．The Two Penny Blue C．A Rare Stamp D．How Mauritius Became Famous
单项选择题The mistake in the locally printed postage stamps was in the （）
A．spelling of postage B．price C．wording D．color
