Assume that the nodal processing delay is negligible. Also, assume that the link between A and the router is 10,000 meters long and the link between B and the router is 20,000 meters long. If the propagation speed in both links is 200,000,000 m/sec, answer the following question:

Assume that B sends a 2GB (2³⁴ bits) file to A after chunking it to 2KB packets. What should be the minimum router buffer size if we want to avoid any data loss for this file transfer?