Cardiac muscle has prolonged contraction due to a sodium induced-calcium released process into the cytoplasm of the cell. Cardiac cells can communicate through pore-like channels between cells. List the junction and the organelle involved in cardiac muscle contraction?

A. Gap; Golgi apparatus
B. Gap; Rough ER
C. Adherens; Smooth ER
D. Adherens; Rough ER
E. Gap; Smooth ER
F. Adherens; Golgi apparatus