Which aspect of the GDPR will likely have the most impact on the consistent implementation of data protection laws throughout the European Union?

A. That it essentially functions as a one-stop shop mechanism
B. That it takes the form of a Regulation as opposed to a Directive
C. That it makes notification of large-scale data breaches mandatory

D. That it makes appointment of a data protection officer mandatory

Reference: https://ec.europa.eu/info/law/law-topic/data-protection/data-protection-eu_en