Which of the following commands copies the configuration from RAM into NVRAM?

(A) copy running-config startup-config
(B) copy startup-config running-config
(C) copy ram nvram
(D) copy nvram ram

copy running-config startup-config is the correct answer. The running-config file is in RAM, and the startup-config file is in NVRAM so the command is:
copy running-config startup-config