B and C are the correct answers. Option B is correct because computer vision can identify commercial brands in images or videos from a database of thousands of global logos. This is useful for tasks such as discovering popular brands on social media or in media product placements. Option C is also correct because computer vision can analyze color usage within an image, determining whether an image is black & white or color and identifying the dominant and accent colors. Options A, D, and E are incorrect because predicting stock prices, translating text between languages, and extracting key phrases are not tasks typically performed by computer vision.