Ella believes that the more one studies for the final exam, the less time it will take them to complete the exam. She measures both of these variables quantitatively (they are both measurement variables) and uses a correlation test statistic to analyze her data. Ella has a ______ hypothesis that will result in a(n) _______ -tailed test
A. Directional; upper
B. Non-directional; many
C. Directional; lower
D. Non-directional; two