An ecommerce company has been monitoring usage of its online store that is hosted on a fleet of Amazon EC2 instances. Surges in traffic occur every weekend day at the same time and last for approximately 4 hours.
Which AWS service should the company use to ensure that there are enough instances to meet the surges in demand?

A. AWS Lambda
B. Amazon EventBridge (Amazon CloudWatch Events)
C. Elastic Load Balancing (ELB)
D. Amazon EC2 Auto Scaling