Which is not true regarding cyclic electron transfer system $(ETS)$ in the thylakoid membrane of higher plants?

Light reaction of photosynthesis occurs inside

In non-cyclic photophosphorylation,how many protons $(H^+)$ are released into the lumen of the thylakoid for the photolysis of $2$ molecules of $H_2O$ (in $H^+$)?

The following $(I-VI)$ are the main steps of chemiosmotic $ATP$ synthesis in the light reaction. Arrange them in the correct order:
$I$. $H^+$ concentration gradient established
$II$. $H^+$ diffuses through $ATP$ synthase
$III$. Carriers use energy from electrons to move $H^+$ across the membrane
$IV$. Electrons from $PS-II$ pass along the electron transport chain
$V$. Light excites electrons in $PS-II$
$VI$. Energy of $H^+$ flow is used by $ATP$ synthase to make $ATP$

Which pigment acts as the reaction center during photosynthesis?

Where is Photosystem-$II$ located?