You work as a network Technician. A new workstation has consistently been unable to obtain anIP address from the DHCP server when the workstation boots. Older workstations function normally， and the new workstation obtains an address when manually forced to renew its address.  What should be configured on the switch to allow the workstation to obtain an IP address at boot？（）

• A、UplinkFast on the switch port connected to the server
• B、BackboneFast on the switch port connected to the server
• C、PortFast on the switch port connected to the workstation
• D、trunking on the switch