Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:The coastal urban areas development orientation has been investigated in five coastal cities.

A、Weinvestigatedthedevelopmentalorientationofurbancommunitiesinfivecoastalcities.;
B、Theorientationofcoastalurbanareasdevelopmenthasbeenputunderinvestigationinfivecoastalcities.;
C、Here,aninvestigationintocostalurbanareasdevelopmentorientationinfivecoastalcitiesispresented.;
D、Thereisaninvestigationintocoastalurbanareasdevelopmentorientationpresentedhereinfivecoastalcities.