In the question below, three statements are given which may or may not contain an error in any part of the sentence. Identify the statements containing an error and also point out the part containing the error.

I) This balancing act forced her (A)/ to do much of her (B)/ own work from midnight (C)/ to five in the morning. (D)
II) Emphasis was laid on (A)/ four southwestern states (B)/ in Nigeria to determine the (C)/ survivals of informal business. (D)
III) That was a good finish (A)/ and it was nice to see that he (B)/ wasn't put of by (C)/ his earlier miss. (D)