Which action occurs first when a device that has the POAP feature boots and cannot find the startup configuration?

Which action occurs first when a device that has the POAP feature boots and cannot find the startup configuration?
A. The device locates a DHCP server.
B. The device enters POAP mode.
C. The device obtains the IP address of a TFTP server.
D. The device installs a software image and a configuration file.