The first generation of computers available was based on the bit micro processors.

The statement given in the question is factually incorrect because first-generation computers were not based on microprocessors.

First-generation computers, developed between 1940 and 1956, used vacuum tubes as their primary electronic component for processing and computation.

Microprocessors were introduced much later and became the foundation of the fourth generation of computers.

Therefore, the first generation of computers cannot be associated with 4-bit, 8-bit, 16-bit, or 64-bit microprocessors.

Hence, Option E: None of the above is the correct answer.