单项选择题
Refer to the following graphs
for Questions.
What was the approximate average yearly increase in the cost of wool from 1996 to 2000, inclusive
A． $1,250
B． $2,000
C． $3,300
D． $5,0O0
E． $10,000
B． $2,000
C． $3,300
D． $5,0O0
E． $10,000