Task: Question Answering
Input (English): Question: If the positive integer x is a multiple of 4 and the positive integer y is a multiple of 5, then xy must be a multiple of which of the following?
I. 8
II. 12
III 18

 Option A: II only

 Option B: I and II only

 Option C: I and III only

 Option D: II and III only

 Option E: I, II and III
Output (English): Option E