<prompt> True for smooth muscle contraction is all excepta More Latching when lower cross-bridge formation.b Dephosphorylation causes definite relaxationc LC phosphatase is essential for binding d Slow prolonged contractile response independent of nerve supplye Length tension relationship does not existacacbc  <response>: Dephosphorylation in smooth muscle does not guarantee relaxation, as some myosin will remain latched to actin.Light chain phosphatase helps in dephosphorylation, not binding. 