All of the following cells arise from cells arise from undifferentiated mesenchymal cells within connective tissue and remain there permanently EXCEPT？

A．It is continuous with the endocardium
B．It is the visceral pericardium
C． It possesses modified cardiac muscle cells
D．It functions to increase intraventricular pressure
E．It possesses cardiac muscle cells

A．Glycolytic pathway
B．Mitochondria
C．Electron transport system
D．Citric acid cycle (Krebs cycle)
E．Golgi complex