Which statement is true about how BPEL Process Manager handles the For Each activity?

Which statement is true about how BPEL Process Manager handles the For Each activity?

A.
The counter variable of the For Each activity is global, so any change to it in the enclosed
scope activity is retained and that change can impact the next iteration.

B.
The For Each activity executes a contained scope activity N times, where N is the final counter
value minus the starting counter value.

C.
The For Each activity waits for the execution to finish for all the branches specified when the
completion condition is specified and evaluated to true.

D.
The counter variable of a For Each activity is local to the enclosed scope activity, so a change
to it outside the scope of the For Each, does not impact the next iteration.

Explanation:

http://docs.oracle.com/cd/E15586_01/integration.1111/e10224/bp_parallel.htm