The correct answer is A because WDR is the standard method for handling scenes with strong contrast between bright background light and a darker foreground target. In a backlit scenario, the camera must balance very bright and very dark regions at the same time. If this is not handled correctly, the foreground subject appears too dark. WDR addresses exactly this problem by improving detail retention in both bright and dark parts of the scene.

This is consistent with the exposure principle emphasized in the material, which states that “T-Shot, Huawei’s patented exposure technology, enables optimal imaging of targets and vehicles at the same time” and explains that “Traditional exposure technology cannot correctly expose targets, motor vehicles, and non-motorized vehicles in one image” . That same engineering logic is what makes WDR the right correction for backlit darkness. By contrast, HLC is mainly used to suppress overly bright highlights such as headlights, not to brighten a dark foreground in a backlit scene. FoV and focal length affect framing and magnification, not dynamic-range correction. Therefore, A is the correct answer.