An online brokerage company requires a high volume trade processing architecture. You need to create a secure queuing system that triggers jobs. The jobs will run in Google Cloud and call the company's Python API to execute trades. You need to efficiently implement a solution. What should you do?

A. Use a Pub/Sub push subscription to trigger a Cloud Function to pass the data to the Python API. B. Write an application hosted on a Compute Engine instance that makes a push subscription to the Pub/Sub topic. C. Write an application that makes a queue in a NoSQL database. D. Use Cloud Composer to subscribe to a Pub/Sub topic and call the Python API.