In the Year 2000, the Average Size of a Transistor

Multiple Choice

In the year 2000, the average size of a transistor in a microprocessor was 250 nanometers. A human hair has a diameter of 70 microns (micrometers) . How many transistors fit across a human hair?

A) 280
B) 28
C) 2800
D) 2.8
E) 0.28