After an investigation into attendance at university lectures, an administrator comments that "there seems to be a strong correlation between attending lectures and whether the student is domestic or international." Which of the following is TRUE regarding this statement?

a. The correlation between lecture attendance and domestic/international status is negative.
b. The correlation between lecture attendance and domestic/international status is positive
c. There may be an association between lecture attendance and domestic/international status but correlation is not an appropriate measure here.
d. More international students attend lectures as compared with domestic students. More domestic students attend lectures as compared with international students.