A Developer Created a New Application That Uses Spot Fleet

Multiple Choice

A developer created a new application that uses Spot Fleet for a variety of instance families across multiple Availability Zones. What should the developer do to ensure that the Spot Fleet is configured for cost optimization?

A) Deploy a capacityOptimized allocation strategy for provisioning Spot Instances.
B) Ensure instance capacity by specifying the desired target capacity and how much of that capacity must be On-Demand.
C) Use the lowestPrice allocation strategy with InstancePoolsToUseCount in the Spot Fleet request.
D) Launch instances up to the Spot Fleet target capacity or the maximum acceptable payment amount.