Sandy is conducting an experiment to see if the grades of dancers are better than the grades of baseball players. She organizes the dancers into group A and the baseball players into group B. She records the grades and makes the conclusion that the dancers have overall better grades.
Is Sandy correct in her statement that this is an experiment?

A. Sandy is incorrect because she did not collect the data accurately and this is an observation.

B. Sandy is correct because she organized the students into two groups.

C.Sandy is incorrect because she did not test anything, so this is an observation.

D.Sandy is correct this is an experiment because she obtained the grades and compared the groups.