Norepinephrine:
$(i)$ is released by sympathetic fibers
$(ii)$ is released by parasympathetic fibers
$(iii)$ increases the heart rate
$(iv)$ decreases blood pressure.
Which of the above statements are correct?

• A
  $(i)$ and $(iii)$
• B
  $(ii)$ and $(iii)$
• C
  $(ii)$ and $(iv)$
• D
  $(i)$ and $(iv)$