An organization wants to optimize costs for their EC2 fleet. They have a baseline of steady-state usage and occasional unpredictable spikes. Which TWO pricing models should they combine for the MOST cost-effective architecture? (Select TWO)

Compute Savings Plans for the steady-state baseline usage.

On-Demand Instances for the steady-state baseline usage.

Spot Instances for the unpredictable, fault-tolerant spike workloads.

Dedicated Hosts for the unpredictable spikes.

Standard Reserved Instances for the spikes.

Capacity Reservations for all workloads.