Arrange the following statements concerning the clinical course of a disease in the correct order.

A. Cellular adaptions may be applied to belay the applied stress decrease injury to the cell.
B. Cells are exposed to an etiological agent that exerts a stress upon cells and tissues.
C. However, if the etiological agent is not removed or the pathogenesis halted an irreversible lethal cellular event will occur.
D. With in the cell there are different mechanisms of cellular injury initiated by the exposure to stress.