Express the limit as a definite integral. What is the value of the definite integral when the limit of the partition P approaches 0? The partition P is a partition of -3 to 9. Which of the following options represents the value of the definite integral?

A) 7c_(1)^(7)\Delta x_(1)
B) 7c_(2)^(7)\Delta x_(2)
C) 7c_(3)^(7)\Delta x_(3)
D) 7c_(4)^(7)\Delta x_(4)