prep1-248

248.
            The United States minted about 857 million silver-colored “Susan B. Anthony” dollars between 1979 and 1981, but the coin proved unpopular because it looked and felt too much like a quarter.

A. The United States minted about 857 million silver-colored “Susan B. Anthony” dollars between 1979 and 1981, but the coin

B. About 857 million silver-colored “Susan B. Anthony” dollars were minted as coins in the United States between 1979 and 1981 but

C. About 857 million silver-colored “Susan B. Anthony” dollars that were minted between 1979 and 1981 in the United States

D. About 857 million silver-colored “Susan B. Anthony” dollars that the United States minted between 1979 and 1981

E. Between 1979 and 1981 the United States minted about 857 million silver-colored “Susan B. Anthony” dollars, which

为什么选A呢？其它选项的错误？