If x and y are positive real numbers, then which of the following is CORRECT?
A x > y ⇒ –x > –y 
B x > y ⇒ –x < –y 
C  
 
D  
If x and y are positive real numbers, then which of the following is CORRECT?
A x > y ⇒ –x > –y 
B x > y ⇒ –x < –y 
C  
 
D 