Which Statement Is True About the Origins of the Intervention

Which statement is true about the origins of the Intervention Wheel?

A) A panel of nurses from Iowa, Minnesota, North Dakota, South Dakota, and Wisconsin developed and refined the Intervention Wheel.
B) It was conceived by a group of international nurses from Norway, Kazakhstan, and Japan.
C) It was a result of a qualitative analysis carried out by the State Boards of Nursing.
D) It resulted from a grounded theory process carried out by public health consultants at the Minnesota Department of Health.