A Network Engineer Is Having a Problem Adding a Custom-Written

A network engineer is having a problem adding a custom-written script to an AOS-CX switch's NAE GUI. The script was written in Python and was successfully added on other AOS-CX switches. The engineer examines the following items from the CLI of the switch: What should the engineer perform to fix this issue?

A) Install the script's signature before installing the new script
B) Ensure the engineer's desktop and the AOS-CX switch are synchronized to the same NTP server
C) Enable trust settings for the AOS-CX switch's SSL certificate
D) Remove a script that is no longer used before installing the new script