"text": There was a what kind of trend in player performance on hard courts and a what kind of trend on grass courts over time? What kind of trend was observed for clay courts?

"options": 
A. statistically significant upward, downward, No significant
B. statistically significant downward, upward, No significant
C. statistically significant downward, upward, Significant
D. statistically significant upward, downward, Significant
E. statistically significant downward, downward, No significant

"correct_answer": "B"