As part of a Business Continuance project， a customer has established replication from 3 spokesto a DR hub with ProtecTIER 7610 appliances. Each of the 3 spokes is backing up 500 GB ofnominal data daily with an average deduplication ratio of 10：1. The replication window is 12 hours.The data change rate is 15%. What is the approximate minimum required bandwidth for eachWAN connection？（）

• A、1.2MB/s
• B、7.5MB/s
• C、12MB/s
• D、75MB/s