Task: Question Answering
Input (English): Question: If 0 < a < b < c < 1 , which of the following are positive?
I.	b-c
II.	a-b
III.	c-a

 Option A: I only

 Option B: II only

 Option C: III only

 Option D: I and II

 Option E: I and III
Output (English): Option C