A company needs guaranteed Amazon EC2 capacity in three specific Availability Zones in a specific AWS Region for an upcoming event that will last 1 week. What should the company do to guarantee the EC2 capacity?

1. Purchase Reserved Instances that specify the Region needed.
2. Create an On-Demand Capacity Reservation that specifies the Region needed.
3. Purchase Reserved Instances that specify the Region and three Availability Zones needed.
4. Create an On-Demand Capacity Reservation that specifies the Region and three Availability Zones needed.