Correct Answer : Option (C) - Electroluminescent display
Electroluminescent display is type of display is the latest to be used for portable computer.
Electroluminescent Displays (ELDs) are a type of Flat panel display created by sandwiching a layer of electroluminescent material such as GaAs between two layers of conductors. When current flows, the layer of material emits radiation in the form of visible light.
In the sense that they can be moved relatively easily, yes, but most times when people are thinking of portable computers they're thinking of a machine that can run on battery power with its own monitor in tow. A mini oc has neither of those crucial features.