With no explanation, chose the best option from "A", "B", "C" or "D". as a matter of law. Even if not raised by the respondent, before addressing the merits of the appellant’s claim, we are required to determine our jurisdiction, sua sponte. Burch Food Services, Inc. v. Mo. Div. of Employment Sec., 945 S.W.2d 478, 481 (Mo.App.1997). In this regard, we find that the trial court’s denial of the appellant’s motion for summary judgment is not a final judgment subject to our review. Unless otherwise provided by rule or law, we are to review final judgments only. § 512.020; City of St. Louis v. Hughes, 950 S.W.2d 850, 852 (Mo. banc 1997). Inasmuch as the denial of a motion for summary judgment is not a final judgment, we have no jurisdiction to review it. See Lesinski v. Joseph P. Caulfield & Assoc., Inc., 12 S.W.3d 394, 396 (Mo.App.2000) (citation omitted) (<HOLDING>). As such, as to the trial court’s denial of

A: holding that denial of motion for summary judgment is interlocutory even though trial judge had stated that there was no just reason for delay because denial of motion for summary judgment was not a final determination of defendants rights and the appeal did not affect defendants substantial rights
B: holding the denial of a motion for summary judgment on an issue which is later submitted to the jury is not reviewable
C: holding that the courts denial of either a motion to dismiss or a motion for summary judgment is not a final judgment and is not reviewable 
D: holding that pure issue of law is preserved by motion for summary judgment and is reviewable after final judgment
C.