Select the answer choice that correctly uses an ellipsis to omit the underlined words in the sentence.
   
    People began investigating the ancient city of Ur, famous for its enormous ziggurat.
A.     People began investigating the ancient city of Ur. . . .
B.     People began investigating the ancient city of Ur
C.     People began investigating the ancient city of Ur. . .
D.     People began investigating the ancient city of Ur.