Find out which part of a sentence has an error.(A) It is better to stay at home /(B) than to walk in the street /(C) when there erupts /(D)…

Find out which part of a sentence has an error.
(A) It is better to stay at home /(B) than to walk in the street /(C) when there erupts /(D) a communal riot in the town. /(E) No Error.