Contractile tissues have the following features
$(i)$ Mesodermal in origin
$(ii)$ They contain stretch receptors.
$(iii)$ Rhythmic contractions are seen in them
$(iv)$ They do not fatigue during the life of the animal
Which of the above are characteristics of sphincters?

• A

  All the four

• B

  Only $(i), (ii)$ and $(iii)$

• C

  Only $(i), (ii)$ and $(iv)$

• D

  Only $(i), (iii)$ and $(iv)$