Which of the Following Is True Regarding Contractions of the Heart

Multiple Choice

Which of the following is true regarding contractions of the heart?

A) The ventricles contract first, followed by the atria.
B) The contractions do not occur in any specific or precise sequence each time.
C) Cardiac muscle tissue contracts under neural stimulation.
D) The rate of cardiac contractions are established by the conducting fibers.
E) Cardiac contractions are coordinated by specialized conducting cells that distribute the stimulus to cardiac muscle cells.