In the following question, a part of the sentence may have an error. Find out which part among the sentences has an error and click the option corresponding to it. If the sentence is free from error, click option 5 i.e. 'No error'

The school was planning (A)/ a summer fund raiser and (B)/ she had volunteered, so she was (C)/ getting ready to go the meeting. (D)/ No error.