From 1990 to 1996 the processing capacity of personal computers increased between 25 and 30 percent annually.
1. From X TO Y..........................2. Between XX AND YY = Correct idiomatic usage
Thus we can chop off B / C / E
Left with A n D :
The intent :
D :In 1992 = 25 % , In 1996 = 30 % ( Doesn't consider the spread in between 1992 - 1996 )
A : 1992 .....( THE SPREAD)....................1996 : 25 %........(THE SPREAD)...............30 %
For me A thus puts things in logical perspective, Leading to my take A.
Furthermore by POE also we can zone on A & D :
B. Twenty-five to thirty percent
is the annual increase in the processing capacity of personal computers in the years 1990 to 1996.
C. The processing capacity of personal computers has increased annually 25 and 30 percent in the years
1982 to 1987.
E.
Occurring from 1990 to 1996
was an annual increase of 25 to 30 percent in the processing capacity of personal computers.