Directions: Below a statement has been divided into four parts. The part in bold is fixed and contains no error. Among the other parts, find the erroneous part. If there is no error, mark Option 5 as your answer.

The collectors from the borough office are coming (A)/ along with medical staff to collecting the blood samples(B)/ of the infected and expiring patients of the ward (C)/to thwart the further spread of the virus. (D)/ No error (E)