Which of the following is true about -9?
A. It is a whole number but not an integer
B. It is both an integer and a whole number
C. It is an integer but not a whole number
D. It is an integer but not a rational number
A. It is a whole number but not an integer
B. It is both an integer and a whole number
C. It is an integer but not a whole number
D. It is an integer but not a rational number