Smooth muscle contraction question... thanks!?

Question

Which of the following is true about smooth muscle contraction?

a. Certain smooth muscle cells can actually divide to increase their numbers.

b. Smooth muscle, in contrast to skeletal muscle, cannot synthesize or secrete any connective tissue elements.

c. Smooth muscle cannot stretch as much as skeletal muscle.

d. Smooth muscle has well-developed T tubules at the site of invagination.

Answer 1

d

Answer 2

The only thing I know for sure is that it's not D. Smooth muscle does not have T tubules that's why there is a "wave" of contraction. T tubules are used in skeletal muscle to allow the action potential to penetrate deep and fast (that's what she said) into the tissue so that the contraction of fibers is simultaneous.