For each of the 50 states and Washington, D.C., a number of statistics related to education are available for 1992. Among these are the average salary of all high school teachers and the percentage of high school seniors who took the SAT exam. The following is a scatterplot of the average teacher salary and the percentage of students taking the SAT exam for all 50 states and Washington, D.C. in 1992.

The value of the correlation for these data is 0.66. We may most reasonably conclude that

A.there is a surprisingly high association between the salaries of individual teachers and the percent of their students who took the SAT.

B.the plot suggests that there are two clusters of teachers-those teachers who tend to inspire their students to take the SAT, and those who don't.

C.none of the above.