What are some of the benefits of using On-Demand EC2 instances? (Choose TWO)
a. They provide free capacity when testing your new applications.
b. They are cheaper than all other EC2 options.
c. They remove the need to buy 'safety net' capacity to handle periodic traffic spikes.
d. They only require 1-2 days for setup and configuration.
e.You can increase or decrease your compute capacity depending on the demands of your application.