Q. 
Suppose now that R(A,B:) and S(A,B:) are two relations with r and s tuples, respectively

A.  m = min(r,s) 
B.  0 <= m <= r + s 
C.  min(r,s) <= m <= max(r,s) 
D.  0 <= m <= min(r,s) 
Answer» D. 0 <= m <= min(r,s) 
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