It is an output of the constraint related to the computer design, which use d by John von Neumann whom has developed the concept of modern design, in which it is a single processing storage method, because the request information and process information are contained in one location, and wrong choices can be described as follows:
In option A, It can't create an I/O bus.
In option C, It can't use multiprocessors.
In option D, It is wrong because it was invented by John von Neumann.
I would say A because the SETI Institute said, "Philip Morrison and Guiseppe Cocconi analyzed how two civilizations separated by many light years of space might use electromagnetic radiation to communicate.
Electromagnetic radiation is the general term for the more familiar light and radio waves."
