The value, V(m), of a comic book m must be months after publication has an average rate of change of -0.04 between m=36 and m=60. Which statement must be true?

A) The value of the comic book decreased by a total of $0.04 between m=36 and m=60

B) The value of the comic book increased by a total of $0.04 between m=36 and m=60

C) The value of the comic book decreased by an average of $0.04 each month between m=36 and m=60

D) The value of the comic book increased by an average of $0.04 each month between m=36 and m=60