In smooth muscle,actin and myosin filaments:

A)Are organized into sarcomeres and aligned in a striated pattern.
B)Overlap,with the actin filaments anchored at dense bodies.
C)Overlap and contain a tropomyosin-troponin complex on the actin filament.
D)Require phosphorylation of the myosin heavy chain to initiate muscle contraction.
E)Typically generate contractile force in the absence of cytosolic Ca⁺⁺.