Given the set of real numbers, which of the following are arrange in DESCENDING order?
A. { -1/2 , -1/4 , -1/8 }
B. {-1/2 , -1/8 , -1/4 }
C. {-1/8 , -1/4 , -1/2 }
D. {-1/8 , -1/2 , -1/4 }