A group of friends are hiking on trail Y when they reach an intersection with trail X. Trail X is perpendicular to trail Y. If trail Y has a slope of - which of the following statements are true?


A.Trail X is steeper than trail Y. 

B.Trail X has a positive slope (it runs uphill). 

C.Trail X has a negative slope (it runs downhill). 

D.Trail Y is steeper than trail X.