The reaction of hydrogen and iodine monochloride is given as: 2 g g g 2 g H 2ICl 2HCl I -> The reaction is of first order with respect to 2 g H and g ICl following mechanisms were proposed. Mechanism A: 2 g g g 2 g H 2ICl 2HCl I -> Mechanism B: 2 g g g H ICl HI ;slow -> g g g 2 g HI ICl HCl I ; -> fast. Which of the above mechanism(s) can be consistent with the given information about the reaction? (AIPMT 2007)