<prompt> Which of the following is a very long acting Beta 2- agonistSalbutamolTerbutalineIndacterolSalmeterol  <response>: Salbutamol, Terbutaline are short acting Beta 2 agonists.Salmeterol, Formeterol are long acting Beta 2 agonists.Indacterol, Carmoterol, Olodlaterol are very long acting Beta 2 agonists. 