In noncyclic photophosphorylation , the site of ATP synthesis taking place between the following electron carriers, is

Question

$\begin {array} {1 1} (1)\;PS\: II \: and \: Q & \quad (2)\: cyt.b_6\: and \: cyt.f \\ (3)\;cyt.b_6\: and \: plastocyanin & \quad (4)\;PSI\: and \: ferredoxin \end {array}$