1ST CLASS UPGRADE DEFAULTS TO U

1ST CLASS UPGRADE DEFAULTS TO U

• A. U
• B. F
• C. C
• D. D

Answer: (A)

When you request a First Class upgrade, the system uses a dedicated upgrade inventory bucket labeled U as the default. This separation matters because upgrades are managed in their own track, separate from the fare class of the original ticket. The U bucket represents available upgrade seats specifically for upgrading to First Class, so if there’s space, the upgrade will be allocated to U. Fare classes like F, C, or D describe the price and rules of the purchased ticket, not the upgrade inventory, so they aren’t used as the default target for an upgrade.

When you request a First Class upgrade, the system uses a dedicated upgrade inventory bucket labeled U as the default. This separation matters because upgrades are managed in their own track, separate from the fare class of the original ticket. The U bucket represents available upgrade seats specifically for upgrading to First Class, so if there’s space, the upgrade will be allocated to U. Fare classes like F, C, or D describe the price and rules of the purchased ticket, not the upgrade inventory, so they aren’t used as the default target for an upgrade.