During a network expansion, an administrator decides to implement a new VLAN $($VLAN$30)$ for guest users. The VLAN is configured, but guests report that they can obtain an IP address but cannot access the Internet.

The administrator confirms that the DHCP server is providing IP addresses in the correct range for VLAN$30.$

What is the MOST likely cause of the internet access issue?

The switch ports are not correctly assigned to VLAN$30.$

The DHCP server is not providing a default gateway address.

The router is not configured with a subinterface for VLAN$30.$

The router's ACL is blocking traffic from VLAN$30.$