With no explanation, chose the best option from "A", "B", "C" or "D". statements and lacks the basis on which she had personal knowledge of the facts asserted. Because Morin offered no basis of knowledge concerning how she knew the discussions took place between Dr. Helfrick and Dr. Bertz, we are unable to consider her statements concerning the alleged conversations. See Radio Station KSCS v. Jennings, 750 S.W.2d 760, 761-62 (Tex.1988); City of Wilmer v. Laidlaw Waste Sys., Inc., 890 S.W.2d 459, 467 (Tex.App.—Dallas), aff'd, 904 S.W.2d 656, 660-61 (Tex.1995). Dr. Helfrick objected to Morin’s affidavit as containing incompetent evidence, but did not receive a ruling. However, objections to affidavits containing defects in substance need not be objected to at the trial level; thus, a ruling was not necessary. See Laidlaw Waste Sys., Inc., 890 S.W.2d at 467 (<HOLDING>). Furthermore, in Ramirez v. Transcontinental

A: holding that a statement that the affiant is senior vicepresident and secretary of a corporation asserting a special appearance is sufficient to affirmatively show how the affiant has personal knowledge of the affidavit statements regarding the corporations contacts with texas
B: holding that nonmovant must set out usually in an affidavit from one with personal knowledge of specific facts what specific evidence could be offered at trial
C: holding that the failure of an affidavit to be made on personal knowledge or specify how the affiant had personal knowledge of the facts asserted is a defect in substance and need not be objected to at trial to be a ground for reversal
D: holding that the affidavit in question did not satisfy the burden of the party moving for summary judgment where affiants eonclusory statement failed to indicate personal knowledge of the circumstances in question and personal knowledge could not be reasonably inferred from the contents of the affidavit
C.