GMAT Sentence Correction (SC) | A spokesperson for NASA announced that scientists were unsure whether

A. were unsure whether the information that was gathered during the recent exploration venture was collected in a completely accurate manner that would ---seems fair enough with no shift of tense in reported speech and without inapt diction such as the conditional ‘if’

B. were unsure if the information that was gathered during the recent exploration venture was collected in a completely accurate manner that would --the use of the conditional ‘if’ is incorrect.

C. were unsure whether