A company implements a two-stage system to handle customer queries for cost-efficiency. In the first stage, a computationally inexpensive model generates a preliminary response. A quality check then determines if this response is adequate. If it is, the process ends. If not, the original customer query is passed to a second, computationally expensive model for a higher-quality response. Which option correctly describes the data flow for a query that requires both stages?

A system uses a two-step process to generate image captions. The diagram for this process shows an input x (an image) being processed by a 'Small Model' to produce an initial caption y1. This is followed by a 'Decision Point' which, if the caption is deemed low-quality, directs the original input x to a 'Large Model' for a final caption y. If an input image of a rare bird species results in the initial caption 'a bird on a branch', and the system then re-processes the image to produce th