A company has a single Amazon EC2 instance. The company wants to adopt a highly available architecture. What can the company do to meet this requirement?

A company has a single Amazon EC2 instance. The company wants to adopt a highly available architecture.
What can the company do to meet this requirement?

A. Scale vertically to a larger EC2 instance size. B. Scale horizontally across multiple Availability Zones. C. Purchase an EC2 Dedicated Instance. D. Change the EC2 instance family to a compute optimized instance.