In the following question, identify the part of the sentence that contains an error. If there is no error, select 'No error'. 'The competent authority must ensure that the victims of political violence in Bengal are able to return to its homes.'

Identify which part of the sentence has an error: These kind of trousers/ (A) are rather/ (B) expensive to buy./ (C) No error (D)

Find the part of the sentence that has a grammatical error: 'The citizens of the area longed on rain, which is natural when it is so terribly dry year-round.'