[USER (data scientist)]: Thank you, Tapilot. We aim to examine any significant trends or shifts in the correlation between court surfaces and player performance within the atp_tennis dataset over the years. This will be achieved through a Time Series Analysis, encompassing line charts, trend analysis, and statistical test results. In relation to this, could you please answer my question: What type of trend is observable in player performance on Hard courts and on which courts is there an upward trend over time?
A. statistically significant downward, Grass
B. statistically significant upward, Clay
C. statistically significant downward, Clay
D. statistically significant upward, Hard
E. None of above

[YOU (AI assistant)]: 