Nazanin is analyzing the relationship between the number of years first year McMaster undergraduate students previously spent being classically trained on a musical instrument and the grade that they received in the course Math 1A03. She calculated a correlation coefficient of 0.25. Which of the following best describes the relationship between these variables according to Nazanin's results?
A) There is a weak positive correlation, where students who performed worse in math tended to have more musical training.
B) There is a strong positive correlation, where students who performed better in math tended to have less musical training.
C) There is a weak positive correlation, where students who performed worse in math tended to have less musical training.
D) There is a strong positive correlation, where students who performed better in math tended to have more musical training.
Answer: C