Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions from 49 to 50.
The children was attracted by the show. It was performed by the animals.
A.The children were attracted by the show performed by the animals.
B.The children were attracted by the show to have been performed by the animals.
C.Performing by the animals, the show attracted the children.
D.The children performed by the animals.