You have an application running in App Engine. Your application is instrumented with Stackdriver Trace. The /product-details request reports details about four known unique products at /sku-details as shown below. You want to reduce the time it takes for the request to complete.
What should you do?

A. Increase the size of the instance class. B. Change the Persistent Disk type to SSD. C. Change /product-details to perform the requests in parallel. D. Store the /sku-details information in a database, and replace the webservice call with a database query.