Network latency refers to the delay that occurs in data transmission over a network, which can affect the response time of an application for users who are geographically distant from the server hosting the application. In this case, customers in Asia experience slow response times because the application is hosted in Europe, causing a higher latency due to the physical distance between the user and the server.
Option B: Network latency is correct because it addresses the primary issue of increased delay due to geographical distance.
References:
* Google Cloud Networking: Understanding Network Latency and Performance
* Google Cloud: Global Load Balancing Solutions to Reduce Latency