Find out whether there is any grammatical error in below sentence: Our history can be seen / as a long evolutionary dialectical development / in which there have been / a painstaking forgiving of rational and moral self.

• A. Our history can be seen
• B. as a long evolutionary dialectical development
• C. in which there have been
• D. a painstaking forgiving of rational and moral self
• E. No error

Answer: (C)