They keep track of the visions in my eyes

You’ve connected your laptop to an external monitor, but no image is displayed on the external screen. Which of these would be the most likely cause of the issue?

A) The inverter is faulty

B) The laptop RAM cannot support an additional display output

C) The external monitor secondary function key has not been selected

D) The operating system does not support an external monitor

E) You need to remove your sunglasses while inside of the building