After selecting an Amazon EC2 Dedicated Host reservation, which pricing option would provide the largest discount?

Explanations:

The no upfront payment option does not provide any discount; it charges on-demand rates.

Hourly on-demand payment offers no discount compared to reserved pricing options.

Partial upfront payment offers some discount but not the largest compared to all upfront.

All upfront payment provides the largest discount as it commits to a long-term usage upfront.