Read the following statements.
$(i)$ It is a contractile tissue present only in the heart.
$(ii)$ Cell junctions fuse the plasma membranes of these cells and make them stick together.
$(iii)$ Communication junctions at some fusion points allow the cells to contract as a unit,i.e.,when one cell receives a signal to contract,its neighbours are also stimulated to contract.
Which of the following type of tissue is being described by the above statements?

• A
  Skeletal muscle
• B
  Cardiac muscle
• C
  Smooth muscle
• D
  Cartilage