Yeah in this scenario I am not misleading any body as my diploma qualification is assessed/evaluated by WES and i have a proof of that. Hence I have uploaded 2 year diploma and 3 year+ bachelors degree which resulted in a 20 points positive difference@Sahussain, based on that I would be inclined to indicate it as "Two or more certificates ..." option. However, try posting in other related threads as well or search the forums for people with same experience ... this is my best estimate only based on what I know, but I am not the most experienced...
sorry if the answer was not completely satisfying ...