The stem-and-leaf plot shows the number of words in the classified ads in a newspaper one day.
How many ads had at least 20, but fewer than 45, words?
1 0 3 3 5 7 9
2 0 0 1 4 5
3 3 8 8
4 7
5 2
key:1|0 = 10
A. 6
B. 3
C. 10
D. 8
+1982 
