QT Corp,A Reputed Courier Service Firm,publishes a Success Story About How

QT Corp.,a reputed courier service firm,publishes a success story about how it helped a needy customer in a flood-affected area by delivering his medicines parcel on time.The customer expressed his satisfaction with the timely service.Which type of owned media was adopted by QT Corp.in this scenario?

A) landing page
B) blog
C) brand community
D) case study
E) branded app