The given sentence has been broken up into four different parts. The error, if any, will be in one or more parts of the sentence. Select the option which contains the part of the sentence which is free from an error. If all are incorrect choose ‘Option 5’ as your answer.

When she went to the zoo, (A) / Lindsay got to see not only tigers, (B) / but polar bears, iguanas, and toucans (C) / that are on the brink of extinction. (D)