According to the GDPR, What Is the Main Task of a Data

According to the GDPR, what is the main task of a Data Protection Officer (DPO) ?

A) To create and maintain records of processing activities.
B) To conduct Privacy Impact Assessments on behalf of the controller or processor.
C) To monitor compliance with other local or European data protection provisions.
D) To create procedures for notification of personal data breaches to competent supervisory authorities.