Your organization requires real-time analytics on streaming data. The data needs to be ingested, processed, and analyzed with low latency. You also require integrated windowing and watermarking capabilities. Which Google Cloud service best fits these requirements?

*Explanation:* Option A is incorrect as it doesn't provide analytics capabilities. Option C is not designed for low-latency real-time analytics. Option D is not specialized in low-latency analytics. Option E does not handle real-time data. Option B, Cloud Dataflow with Apache Beam, is the correct choice as it offers low-latency data processing with integrated windowing and watermarking capabilities, making it suitable for real-time analytics on streaming data.