Consider the following relations:
R = {(x, y) | x, y are real numbers and x = wy for some rational number w};
S = {(m/n, p/q) : m, n, pand q are integers such that n, q ≠ o and qm = pn}. Then
A. neither R nor S is an equivalence relation
B. S is an equivalence relation but R is not an equivalence relation
C. R and S both are equivalence relations
D. R is an equivalence relation but S is not an equivalence relation
