What is the purpose of the SQL ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW in a window function?

A. Specifies the range of rows to include in the window function from the start to the current row

B. Specifies the range of rows to include in the window function from the current row to the end

C. Excludes the current row from the window function

D. Specifies the range of rows to include in the window function from the start to the end

Correct Answer is :

A. Specifies the range of rows to include in the window function from the start to the current row