guys...i owned a a230...

my flash got a wireless function (optically trigger)
so, i set my a230 built in flash to 'wireless' and optically trigger my flashgun...

both flash (built in and flashgun) light up at the same time...

now my question is, which light appear in my photo? the built-in flash (that trigger my flashgun) or from the flashgun?

need some help here...