Agreed -- way too few temps to tell. OPKs may be a good indication that you are going to O, but without temps, there's no way to confirm. Just keep humping it out and hope for the best.
I feel like the only answer for this chart stalk is that option they gave you in the GRE's in the logic/rational thinking section which is not enough information to determine an answer.
Keep temping to form a clearer pic. GL!