Which one of the following sentences contains NO errors?

A. The Investigations Unit is trying to hire an Office Technician before the new fiscal year begins.

B. As an Office Technician, your responsible for a wide range of duties and come in contact with all levels of the organization.

C. An enviromental review must be conducted before construction can begin.

D. Beginning in the morning with check-in and continuing all the way through to the end of the day.