Exhibit: The following are true with one of the TestKing routers: 1) The IOS image in flash is missing 2) No Network connectivity is available. 3) The router fallback IOS image is corrupt. How will this Cisco 2600 series router respond if the conditions listed in the exhibit exist during the boot process?（）

• A、The router will enter setup mode.
• B、The router will enter ROM monitor mode.
• C、The router will enter global configuration mode.
• D、The boot will hang until an IOS is available.